Several Republican senators have no knowledge of the specific policy proposals GOP leadership is weighing for inclusion in the pending legislation to overhaul the U.S. health care system.

The lack of widespread knowledge among members about the exact policy under review calls into question whether Republicans will be able to advance a bill before the Fourth of July recess, the timeline that GOP aides say Senate Majority Leader Mitch McConnell is operating under.

While there have been thrice-weekly meetings on the legislation to repeal and replace the 2010 health care law, those have mostly focused on broad policy. And while complete legislative text has not yet been drafted, leadership has begun initial conversations with the nonpartisan Congressional Budget Office on several proposals.

But GOP senators say they do not know what those are.

“While I haven’t seen the language, I am hoping that it stays within the confines of what we’ve discussed within the caucus,” Sen. Joni Ernst of Iowa told Roll Call.