"Let's not lock ourselves into anything right now until we actually get the reconciliation package,” U.S. Rep. Zach Nunn, an Iowa Republican, said.

Around a dozen House Republicans are uneasy about the prospect of voting for their party’s budget proposal over potential cuts to Medicaid, according to several people familiar with the conversations.

For Representative David Valadao of California and other Republicans whose constituents depend on Medicaid, a vote for their party’s budget could be politically fatal. President Trump’s agenda hangs in the balance.