U.S. President Barack Obama has signed into law the unemployment benefits extension bill, making millions of Americans who are out of work for six months or more eligible for extended federal assistance. The measure was approved by the House of Representatives Thursday afternoon after clearing by the Senate on Wednesday. The bill, with a price tag of 34 billion dollars, would restore benefits to more than 2.5 million unemployed people who have seen their checks cut off since the emergency program expired on June 2. The new measure authorizes unemployed workers to draw up to 99 weeks of aid through November averaging 309 dollars a week.