delivered the opinion of the Court.
This case is a companion to Labor Board v. Mexia Textile Mills, ante, p. 563, decided this day. Respondent is a manufacturer of clothing in Texas, and is engaged in interstate commerce within the meaning of the labor relations aсts. 1 In December 1943, the National Labor Relations Board designated Local Union No. 251 of the United Garment Workers of America, affiliated with the American Federation of Labor, the exclusive bargaining-representative of certain of respondent’s employees. In December 1945, the Union charged thе respondent with violations of §§8(1) and 8 (5) of the National Labor Relations Act in connection with a strike going on at that time. The Board’s complaint was issued рursuant to these charges in April 1946; a hearing was held; the Trial Examiner’s intermediate report was issued; and, since no exceptions to the report werе entered by the respondent, the Board, on August 26, 1946, adopted the *579 Trial Examiner’s findings, 2 conclusions and recommendations, and ordered the respondent to ceasе and desist from its refusal to bargain with the Union. With certain limitations, the company was also ordered to offer reinstatement and back pay to employees who had gone on strike. 70 N. L. R. B. 540 (1946).
Two and one-half years later, on February 17, 1949, the Board petitioned the Court of Appeals for the Fifth Circuit for the enforcement of its order. Respondent moved for leave to adduce additional evidence. It stated that it had bargained with the Union since the date of the order, but that no agreement had been reached; that the Union had made no effort to bargain since early in 1948; that respondent questioned whether thе Union retained the majority of employees in the bargaining unit, since certain employees had informed respondent that they had left the Union, and the Uniоn’s organizer had stated, according to respondent, that a rival union had a “substantial group” within its membership; that these facts had come to respondent’s attention since the “record in the instant case was closed and completed”; and finally that the passage of the statute imposing a duty upon the Union to bargain with the respondent might affect the disposition of the case before the Board.
On May 13, 1949, the Court of Appeals for the Fifth Circuit entered an order identical in pertinent part with that quoted in
Labor Board
v.
Mexia Textile Mills, ante,
p. 563. We granted certiorari,
Although respondent concedes that the decision in the Mexia case governs the case at bar, a single issue may deserve separate treatment. In the instant case the Board waited two and one-half years before it sought enforcement of its order. There is a suggestion that the *580 length of the delay may have influеnced the Court of Appeals in ordering the Board to take evidence on the question of compliance. We regard this as doubtful, in view of its identicаl action in the Mexia case, when the petition for enforcement was filed only nine months after the Board’s order. But in any event we view the delay as without cоnsequence in this case.
The Board is of course charged with primary responsibility in effectuating the policies of the Act. It has determined that those рolicies are advanced in some cases by resorting to the processes of negotiation with the employer rather than the compulsion, as well as the trouble and expense, of an enforcement decree. See § 202.13 of the Board’s earlier regulations regarding the Labor Management Relations Act, 12 Fed. Reg. 5651, 5653 (1947). In some cases delay in enforcement may be helpful in reaching an immediate solution of the problem; in others, exhaustion of negotiation techniques before a decree is requested may consume many months after the Board’s order and before such techniques fail. We are of the opinion that a strict judicial time limitation of the duration presented in the instant case would frustrate the deliberate purpose of Congrеss in permitting, but not requiring, resort to an enforcement decree.
3
Cf. § 10 (b), which states a definite period of limitation regarding charges filed with the Board. Comparе
Labor Board
v.
American Creosoting Co.,
The contrary argument was made in more explicit terms in
Labor Board
v.
Crompton-Highland Mills,
We think the rationale of the
Crompton-Highland
case is persuasive here. Otherwise those intent upon violating the Act have a ready means of escapе through the use of delaying tactics in negotiation, culminating in the filing of motions for leave to adduce evidence when enforcement is sought, thus effectively frustrating the Board’s order. We need not now face the question whether a Court of Appeals may under § 10 (e) refer a matter back to the Board for аppropriate action on a showing by the employer that subsequent to the Board’s order, but before the petition for enforcement several years later, a rival union has filed before the Board a petition for recognition, not yet acted upon, which claims that the bargaining represеntative no longer has a majority of the employees. Nor need we decide whether a period of delay through its length alone may mature into a denial of an enforcement decree or make necessary the adduction of additional evidence. Cf.
Labor Board
v.
Eanet,
85 U. S. App. D. C. 371,
It is so ordered.
Notes
49 Stat. 449, 29 U. S. C. § 151 et seq.; 61 Stat. 136, 29 U. S. C. (Supp. III) § 141 et seq.
Including the Trial Examiner’s rejection of the employer’s allegation that the Union no longer represented the majority in the bargaining unit.
“The Senate amendment followed the present language of the act, which permits the Board to petition for enforcement, but does not require it to do so. The conference agreement adopts the language of the Senate amendment.” H. R. Conf. Rep. No. 510, on H. R. 3020, 80th Cong., 1st Sess., p. 55.
