U.S. President Barack Obama is urging U.S. Congress to extend tax breaks for the middle class, saying it is "unacceptable for some Republicans in Congress to hold middle class tax cuts hostage simply because they refuse to let tax rates go up on the wealthiest Americans." With the clock ticking toward the so-called "fiscal cliff," Obama asked lawmakers in his weekly address to "begin by doing what we all agree on" and extend the middle class tax cuts set to expire at the end of the year. "With the issue behind us, we'll have more time to work out a plan to bring down our deficits in a balanced way, including by asking the wealthiest Americans to pay a little more, so we can still invest in the things that make our nation strong," he said from a toy manufacturing facility in Hatfield, Pa., where he delivered a similar message to workers Friday. "If we can just get a few House Republicans on board, I'll sign this bill as soon as Congress sends it my way," he said.