N.Y. Racing, Pari-Mutuel Wagering and Breeding Law § 905
2. The combination of wagers on New York races. a. The commission may authorize the combination of out-of-state or foreign wagers on horse races in New York state with the same type of wagers made in New York state at the site of the statewide interface designated by the commission for the combination of on-track and off-track wagers made in New York state. b. In this regard the commission shall enact rules and regulations including but not limited to insuring the following standards: that the out-of-state or foreign wagering operator is duly authorized to conduct such wagering by the laws of the applicable out-of-state or foreign government and is of satisfactory ethical and financial repute; that all such wagers are made in a format consistent with the format for such wagers in New York state as to number of betting entries and the combination of such entries into coupled entries and fields; that if the laws of such other state or foreign country permit, that such wagers shall be subject to the identical retention and breakage rates as pertain at the site of the New York interface; that if the laws of such other state or foreign country prescribe a retention or breakage rate different from that in New York state it would not be contrary to the public interest to compute odds and payouts for such out-of-state or foreign wagers consistent with such law; that if it is consistent with the public interest to compute odds and payouts for such out-of-state or foreign wagers according to retention or breakage rates different from those in New York state, that the site of the New York interface is ready and able to carry out such computations consistent with the formulas hereinafter prescribed; that in regard to foreign wagers, that for computational purposes all foreign wagers to be combined shall be converted into American dollars at the prevailing exchange rates established by a money center bank on the date of the race (although breakage shall be computed consistent with foreign currency denominations); that other than the variations caused by retention or breakage computations that all odds and pay-outs shall be computed and calculated, refunds or cancellations awarded or allowed, and overpayments or underpayments corrected solely in accordance with the applicable rules in New York state whose laws shall govern all disputes pertinent thereto; that the means, methods and times of transmission of wagering data necessary to the proper implementation of this subdivision shall be as prescribed and approved by the commission; that all entities whose wagers are so combined have agreed that the odds and final pay-offs shall be computed in accordance with the data available for computation at the site of the statewide interface at the start of the race and that pay-off computations in accordance therewith shall be final regardless of mistakes in transmission or failures to transmit or receive all wagers and that the out-of-state or foreign operators shall be solely responsible for claims asserted in that regard for wagers made through such operators; that the out-of-state or foreign operator consents to be subject to audit by the commissioner of taxation and finance or his or her designee to verify the accuracy and completeness of all wagers required to be transmitted by it hereunder; and such other rules and regulations as may be deemed necessary and appropriate by the commission. c. If different retention or breakage rates than those prevailing at the site of the New York interface are prescribed by the laws governing such out-of-state or foreign betting operator, and the commission is satisfied that it would not be contrary to the public interest to accept such wagers for combination with New York wagers, calculations of the current odds and final pay-off prices shall be made as follows:
3. Combining New York wagers on horse races conducted in other states or foreign countries with wagers on such races made elsewhere. a. The commission may authorize the combination of wagers made in New York state upon the outcome of out-of-state or foreign horse races with wagers made upon such races elsewhere in accordance with rules and regulations of the commission which shall include but not be limited to the following provisions: