40 USC § 15507
Payment of non-Federal share for certain Federal grant programs
through Public Law 119-27, except Public Law 119-21
Amounts made available to carry out this subtitle shall be available for the payment of the non-Federal share for any project carried out under another Federal grant program—
(1) for which a Commission is not the sole or primary funding source; and
(2) that is consistent with the authorities of the applicable Commission.