House Speaker Paul Ryan, R-Wis., expressed confidence Friday that a healthcare bill spearheaded by Sen. Lindsey Graham, R-S.C., and Sen. Bill Cassidy, R-La., could pass before the end of September, saying the bill has "real promise and potential."

Ryan told a local Wisconsin radio program that the state's GOP Sen. Ron Johnson is "pretty optimistic" that healthcare could be resuscitated in the Senate with this proposal, which would need to pass the chamber by the end of September due to reconciliation rules.

"I just came from lunch with Ron Johnson here in Madison an hour ago," Ryan told WISN's Vicki McKenna. "He's pretty optimistic that they may be able to resuscitate this issue. I spoke with Lindsey Graham this morning. There's this Graham-Cassidy bill that I actually think has some real promise and potential.

"It's basically federalism where you just block grant the whole thing," Ryan said. "You block grant Obamacare back to the states. Just the whole thing."

Along with Graham and Cassidy, the bill is also backed by Johnson and Sen. Dean Heller, R-Nev. Cassidy said Friday that he believes the bill has at least 48 or 49 members who would currently vote for the bill.

Only one Senate Republican, Sen. Rand Paul, R-Ky., has come out against the bill so far. Paul said Friday that it is "Obamacare lite" and only redistributes Obamacare funds from Democratic-leaning to Republican-leaning states.