On March 4, 2013, the House gave final approval to H.R. 307, the Pandemic and All-Hazards Preparedness Reauthorization Act of 2013, after approving amendments adopted by the Senate on February 27, 2013. The legislation reauthorizes programs intended to strengthen the nation's preparedness infrastructure and support development of medical countermeasures to respond to chemical, biological, radiological, and nuclear attacks. The legislation now awaits the President’s signature.