Delivering the GOP's weekly media address, Rep. Aaron Schock of Illinois said the law is a "bad product" for young Americans.
The law requires insurance companies to shift the cost of older, sicker clients onto young people, Schock said, and the president needs about 2.7 million young people to enroll to keep premiums from rising.
"Young people helped put the president in office, and with this healthcare law, he's pushing them into years of less choice, fewer opportunities, and larger bills," the congressman said.
He called for the law to be scrapped and redone "so that young people pay their fair share for health care and nothing more."
"And instead of Washington telling us what to buy, let's get back to letting every American choose the plan that's best for them and their family," Schock added.
Republicans have taken advantage of every problem with the law to push for its repeal, The Hill reported.
President Obama has taken responsibility for the problems, saying at a press conference Friday, "Since I'm in charge, obviously we screwed it up." He added that "we've got several million people who are going to have healthcare that works."
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