The House's ObamaCare replacement legislation faces an uncertain future in the Senate, where some Republican members are hesitant to voice support for it.

On "Your World" yesterday, Sen. Rand Paul (R-KY) said the bill needs work before he will support it, arguing it will "subsidize the profit of insurance companies."

Many pointed out that the legislation has not been "scored" by the Congressional Budget Office, which will estimate the cost of the bill and how it will impact coverage.

The first version of the bill, which never made it to a vote, would have resulted in a loss of coverage for 24 million people over a decade, according to the CBO projection.

Sen. John McCain (R-AZ) said he "does not approve" of the decision to vote without a CBO score, while Sen. Bill Cassidy (R-LA) said there must be a score, by law, before the Senate votes.

Sen. Lindsey Graham (R-SC) echoed the sentiment.

A bill -- finalized yesterday, has not been scored, amendments not allowed, and 3 hours final debate -- should be viewed with caution. — Lindsey Graham (@LindseyGrahamSC) May 4, 2017

Watch the "Happening Now" discussion above.

GOP'er Votes Against ObamaCare Replacement: 'It Will Not Lower Premiums'

Krauthammer Predicts Single-Payer Health Care in Less Than 7 Years

Police: Armed Customer Fatally Shot Attacker Inside Texas Sports Bar