April 01, 2015
On Wednesday, April 1, 2015, the President signed into law:
H.R. 1527, the "Slain Officer Family Support Act of 2015," which allows taxpayers to accelerate the income tax benefits for charitable cash contributions made between January 1, 2015, and April 15, 2015, for the relief of the families of slain New York Police Department Detectives Wenjian Liu and Rafael Ramos.
Barack Obama, Statement by the Press Secretary on H.R. 1527 Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/319523