Sen. Ted Cruz, R-Texas, said President Obama should apologize for Obamacare during his Tuesday State of the Union address.

"One of the things President Obama really ought to do is look in the TV camera and say to the over five million Americans all across this country who've had their health insurance canceled because of Obamacare, to look in the camera and say, ‘I'm sorry,' " Cruz said Sunday on CBS' "Face the Nation."

The comments underscore the focus Republicans are putting on Obamacare during the election year. They see criticizing the health care law as a winning strategy, citing the botched rollout and some of the unmet expectations for the program.

Cruz also defended his push to defund Obamacare during the 16-day government shutdown in October, though many American blamed the shutdown on Cruz's tactic.

"I think the proof is in the pudding," Cruz said. "Obamacare is a disaster."