Bipartisan ACA bill gets a challenge from the right

Sen. Orrin Hatch released an ACA proposal. AP Photo/Rick Bowmer, File

Two prominent Republicans have come up with a more conservative alternative to the Senate's bipartisan Affordable Care Act bill. The new proposal, from Sen. Orrin Hatch and Rep. Kevin Brady, would waive the ACA's individual and employer mandates in exchange for temporarily funding its cost-sharing subsidies.

Why it matters: This proposal would be harder to pass than the one that's already on the table. But it's a sign that conservatives aren't willing to sit on the sidelines on a process that, so far, has not given them much of what they want.