On Friday, September 16, 2011, the President signed into law:
H.R. 2887, the "Surface and Air Transportation Programs Extension Act of 2011," which extends through March 31, 2012, funding for programs funded from the Highway Trust Fund (HTF), authority to make expenditures from the HTF for HTF-financed programs, and authority to collect taxes that fund the HTF; and extends through January 31, 2012, authorities to collect taxes that fund the Airport and Airway Trust Fund, make expenditures from the Airport and Airway Trust Fund, and make grants to airports under the Airport Improvement Program.
Barack Obama, Statement by the Press Secretary on H.R. 2887 Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/309286