delivered the opinion of the Court.
Thе issue in this case arises out of a condemnation proceeding in which the' United States acquired an easement pursuant to its power of eminent domain. The principal question presented is whether the claim to “just compensation” vested in the owners of the land at the time the United States entered into possession of thе easement pursuant to court order in 1943 or whether such claim vested in the respondent, Dow, who acquired the land in 1945, at the time the United States filed a declaration of taking in 1946, under the Declaration of Taking Act of February 26, 1931, 46 Stat. 1421, 40 U. S. C. §§ 258a-258e.
In March 1943 the United States instituted a condemnation proceeding in the District Court for the Southern District of Texas to acquire a right-of-way for a pipe line over certain lands in Harris County, Texas, owned by the estate and heirs of John F. Garrett and James Bute. Among the lands condemned was Parcel 1, a narrow strip of some 2.7 acres out of a 617-acre tract, the property involved in the present suit. The Government proceeded undеr various statutes, including the Act of August 1, 1888, 25 Stat. 357, 40 U. S. C. § 257, and Title II of the Second War Powers Act of *19 March 27, 1942, 56 Stat. 176, 177. As requested in the petition, the District Court ordered the United States into the “immediate possession” of this strip. Within the next ten days the United States entered into physical possession and began laying the pipe line through the tract. The line was complеted in 1943 and has been iñ continuous use since that time.
In November 1945 the 617-acre tract was conveyed to Dow by a general warranty deed which specifically excepted the pipe-line right-of-way as being subject to the condemnation proceedings. In May 1946 the Government filed a declaration of taking, under the Declarаtion of Taking Act, covering this pipe-line strip. Estimated compensation was deposited in court and judgment on the declaration of taking was entered. A few months later the Government amended its petition to name additional parties, including Dow, who were alleged to be asserting an interest in the land. The question of compensаtion was referred to commissioners under the Texas practice, which at that time was applicable to federal condemnation proceedings. See
United States
v.
Miller,
After a lengthy unexplained delay in thе proceedings, the Government in May 1955 filed a motion for summary judgment against Dow. In March 1956 the District Court granted this motion and dismissed Dow as a party. The District Court found as a fact that Dow’s grantors had intended to convey to him “all their right, title and interest in the said Parcel No. 1 or in the award to be made for the same.” It then went on to rule that under the Assignment of Clаims Act, 31 U. S. C. § 203, this was a prohibited assignment of a claim against the United States, and that the deed was therefore ineffective to convey to Dow the compensation award. The Court
*20
of Appeals reversed, holding that no assignment was involved because no claim to compensation against the United States “arose and vested” until the filing of the declaration of taking in 1946, and that, because Dow by that time had become owner of the land, he was entitled to the award.
It is well established, as the Court of Appeals recognized, that the Assignment of Claims Act prohibits the voluntary assignment of a compensation claim against the Government for the taking of property.
United States
v.
Shannon,
Broadly speaking, the United States may take property pursuant to its power of eminent domain in one of two ways: it can enter into physical possession of property without authority of a court order; or it can institute condemnation proceedings under various Acts of Congress providing authority for such takings. Under the first method — physical seizure — no condemnation proceedings are instituted, and the property owner is provided a remedy under the Tuсker Act, 28 U. S. C. §§ 1346 (a) (2) and 1491, to recover just compensation. See
Hurley
v.
Kincaid,
Although in both classes of “taking” cases — condemnation and physical seizure — -title to the property passes to the Government only when the owner receives compensation, see
Albert Hanson Lumber Co.
v.
United States,
Had the Government not subsequently filed a declaration of taking in this case, there is no reason to believe that these ordinary rules would not have been applicable ; the owners of the parcel when the Government entered into possession in 1943 would then havе been entitled to compensation. No suggestion to the contrary has been made by Dow. Instead, Dow contends that although there was an entry into possession in 1943 which was an appropriation of the property sufficient to amount to a “taking,” the subsequent filing of a declaration of taking vitiated the effect of the earlier entry, and rendered the filing date the time of the taking. We think that this contention is founded on a mistaken view of the Declaration of Taking Act and must be rejected.
Section 1 of the Declaration of Taking Act provides: “Upon the filing said declaration of taking [prior to judgment in a condemnation proceeding] and of the deposit in thе court ... of the estimated compensation . . . title . . . shall vest in the United States . . . and said lands shall be deemed to be condemned and taken for the
*23
use of the United States, and the right to just compensation . . . shall vest in the persons entitled thereto . . . .” Although it has been recognized that the “exact effect of these provisions is not entirely clear,”
Catlin
v.
United States,
The scheme of the Taking Act makes it plain that when the Government files a declaration before it has entered into possession of the property the filing constitutes the “taking.” But neither the language nor the history of the Act provides a reliable indication as to the intеntion of Congress in cases, such as the one before us, where a declaration is filed after the Government has taken possession. Nevertheless, a number of considerations have led us to the view that in such cases the date of “taking” is the date on which the Government entered and appropriated the property to publiс use.
*24
In the first place, to adopt the solution urged by Dow would be to undermine policies determining the other incidents of the Government’s obligation to provide just compensation. As already noted, in cases where there has been an entry into possession before the filing of a declaration of taking, such entry has been cоnsidered the time of “taking” for purposes of valuing the property and fixing the date on which the Government’s obligation to pay interest begins to run. To rule that the date of “taking” is the time of filing would confront us with a Hobson’s choice. On the one hand, it would certainly be bizarre to hold that there were two different “takings” of the same property, with sоme incidents of the taking determined as of one date and some as of the other. On the other hand, to rule that for all purposes the time of taking is the time of filing would open the door to anomalous results. For example, if the value of the property changed between the time the Government took possession and the time of filing, payment as of the latter date would not be an accurate reflection of the value of what the property owner gave up and the Government acquired. In the graphic language of Chief Justice Shaw: “If a pie-powder court could be called on the instant and on the spot, the true rule of justice for the рublic would be, to pay the compensation with one hand, whilst they apply the axe with the other.”
Parks
v.
Boston,
15 Pick. (Mass.) 198, 208. See also
Anderson
v.
United States,
*25
There is another reason why we cannot regard the time of filing as the time of the "taking” in cases where the Government has already entered into possession. Because of the uncertainty when, if ever, a declaration would be filed after the Gоvernment’s entry, manipulations might be encouraged which could operate to the disadvantage of either the landowner or the United States. The Government tells us that the declaration of taking procedure may be invoked “solely in the discretion of the administrative officer.” It would thus lie within the power of such an officer to reduce the “just” compensation due the property owner by staying his hand until a market situation favorable to the Government had developed. Conversely, landowners might be in a position to increase unduly the Government’s liability. For instance, if a single tract of land were worth more than the sum of its component parcels, cf.
United States
v.
Runner,
We cannot attribute to Congress the intention to promulgate a rule which would open the door to such obvious incongruities and undesirable possibilities.
We are not pеrsuaded by any of the countervailing considerations put forward by Dow. It is claimed that much needed certainty would ensue in condemnation matters were the Court to hold that the Government’s filing under the Taking Act invariably established the date of the “taking” of this property. But certainty is not lacking under the rule advocated by the Government, which fixes thе “taking” at the time of the entry into physical possession — a fact readily ascertainable whether or not the Government makes use of condemnation proceedings, and whether or not it ever files a declaration of taking.
*26
It is also argued that a property owner might be prejudiced under the Government’s view becausе the project could be abandoned and the condemnation proceedings discontinued before title passed to the Government. But the possibility of such an abandonment exists whenever the Government enters into possession of property without filing a declaration of taking and without otherwise providing compensation for acquisition of the title. In any event, such an abandonment does not prejudice the property owner. It merely results in an alteration in the property interest taken — from full ownership to one of temporary use and occupation.
O’Connor
v.
United States,
Nor can we accept the suggestion that in cases like the present one the total compensation should be divided between the first and second owners of the property, the former taking that portion of the award attributable to the Government’s use of the property until the passage of title, and the latter receiving the balance. Cf.
United States
v.
40,379 Square Feet of Land,
*27 Dow relies on Danforth v. United States, supra, and United States v. Dickinson, supra, but neither case is in point on the issue before us. In Danforth the Court rejected the landowner’s claim for interest on the ground, inter alia, that the construction of a set-back levee near his land did not amount to a “taking” because the Government by such action had not yet appropriated the property to its use. The expressly limited holding in Dickinson was that the statute of limitations did not bar an action under the Tucker Act for a taking by flooding when it was uncertain at what stage in the flooding operation the land had become appropriated to public use. In the present case there is no dispute over the fact that the United States appropriated Parcel 1 on the date that it entered into physical possession under order of the District Court.
Finally, we see no merit in the suggestion that it is inequitable to deny Dow recovery in this action. Dow took his deed with full notice of the condemnation proceeding brought by the United States. There were readily available contractual means by which he could have protected himself
vis-á-vis
his grantors against the contingency that his claim against the United States would be subsequently invalidated by the Anti-Assignment Act. And whatever may be the equities between the former owners and Dow, or between the Government and the former owners, whose claim to compensation Dow asserts may be barred by the statutе of limitations, such equities cannot serve to prevent the application of the correct rule of law as between the Government and Dow in this case. Cf.
McKenzie
v.
Irving Trust Co.,
Reversed.
Notes
The Assignment of Claims Act provides that assignments of claims which it would otherwise nullify are nevertheless valid if “they are freely made and executed in the presence of at least two attesting witnesses, after the allowance of such a claim, the ascertainment of the amount due, and the issuing of a warrant for the payment thereof. . . .”
