Republican Sens. Jerry Moran of Kansas and Mike Lee of Utah say they will oppose the Republican health care bill, dealing a blow to GOP leaders' hopes of repealing and replacing President Barack Obama's legislation.

The two senators issued separate statements late Monday saying they can't support the legislation. They join two other Republican senators, Susan Collins of Maine and Rand Paul of Kentucky, in opposition.

With just a 52-48 majority in the Senate, Lee and Moran's resistance means Majority Leader Mitch McConnell cannot move ahead on the bill.

Lee says he can't support the bill because it doesn't repeal all of the Obamacare taxes and doesn't go far enough to lower premiums.

Moran says, "We should not put our stamp of approval on bad policy."