to such State an amount equal to 50 percent of the funds spent on such activities. (2) Funding To carry out this subsection, there is authorized to be appropriated, and there is appropriated, out of any funds in the Treasury not otherwise appropriated, $25,000,000,000, to remain available until expended. (b) Funds eligible for non-Federal share of certain transportation projects Funds provided under a payment made under section 601 of the Social Security Act may be used for up to 100 percent of the non-Federal share of any project authorized by the Corps of Engineers and carried out by a non-Federal interest or any project receiving financial assistance under title 23, United States Code, if such funds are used to carry out activities during the period beginning on the date of enactment of this Act and ending on the date that is 1 year after such date of enactment.