Millions of jobless Americans are poised to lose their unemployment benefits at the end of the year without action from Congress to extend temporary aid programs. A federal program paying benefits to gig workers and others (such as the self-employed, freelancers, contractors and part-timers) is poised to lapse after December, as is one paying extra relief to workers who've exhausted their standard state benefit. In all, there are about 13.5 million people in these two programs — more than half of the roughly 23 million people receiving unemployment benefits, according to Labor Department data.