Senate Republicans on Monday proposed steeper Medicaid cuts than those included in the House-passed version of President Donald Trump’s signature policy bill—making the bill’s passage by the July 4 deadline set by Congressional Republicans even more uncertain as Medicaid cuts have been a major sticking point for some in the GOP.

Medicaid provisions in Republicans’ reconciliation megabill would lead to between 8,000 and nearly 25,000 medically preventable deaths, according to new research in the Annals of Internal Medicine.