Paul Ryan hammered President Barack Obama's health care law Wednesday, stressing that he plans to use the early days of Donald Trump's presidency to "fix" the insurance system.

"You have to remember this law is getting much worse. It is what actuaries say, 'Entering a death spiral.' High, high premiums increase, high deductibles, no choices. We have to fix this problem," the House speaker told CNBC's "Squawk Box."