The Senate will defer consideration of the GOP healthcare plan that would partially repeal and replace Obamacare until Sen. John McCain, R-Ariz., returns to work following a procedure to remove a blood clot from above his left eye, Senate Majority Leader Mitch McConnell said in a statement late Saturday.

After wishing him a "speedy recovery," McConnell, R-Ky., added: "While John is recovering, the Senate will continue our work on legislative items and nominations, and will defer consideration of the Better Care Act."

About two hours earlier, McCain's office revealed that he would be spending a week in his home state of Arizona recovering from the procedure he got on Friday.

Mayo Clinic Hospital in Phoenix said the 80-year-old is now "resting comfortably at home and is in good condition," after a successful operation.

McCain's operation comes at an inopportune time for the Senate Republican leadership, which was hoping to bring a motion-to-proceed vote for their healthcare plan to the floor early next week. Fifty votes are needed to pass the bill, but already Sens. Susan Collins of Maine and Rand Paul of Kentucky say oppose the latest draft. The effort will fail if one more GOP senator comes out against it. Without McCain, only 49 senators would vote in favor as it stands now.

McCain's fellow Republican senator from Arizona, Jeff Flake, tweeted Saturday evening that he hopes to see McCain back at work soon.

"[McCain] is the most tenacious and resilient man I know," he said.