On Saturday, Senate Majority Leader Mitch McConnell said he had postponed the Senate health care review amid the announcement by Sen. John McCain that he will be undergoing surgery, after reducing the Republicans votes on their trademark law.

McConnel's announcement has reached another obstacle in GOP efforts, backed by President Donald Trump, to cancel and replace Obamacare after years of promises.

McCain undergoing surgery

McConnell's announcement came immediately after McCain's office discovered that he had undergone a surgical operation to remove a blood clot in his left eye and his doctors warned him to stay in Arizona until next week to get healed.

With McConnell's health care legislation, which already relies on the Senator without exchange of votes, McCain's absence would mean that the majority leader would not be able to round off the needed votes to move forward, CNBC News reported.

Even before the development on Saturday night, the fate of health care legislation seemed deeply uncertain in the Senate. In addition to two GOP votes of modern GOP Susan Collins of Maine and Conservative Rando Paul of Kentucky, at least half a dozen other Republican senators have not supported or voiced reservations about McConnell's Thursday announcement.

Last month, McConnell had to suspend the vote in the previous version of the law because the GOP opposition left the insured defeat.

In the 52-48 Senate between Republicans and Democrats, McConnell may lose more than two votes and still prevail.

The bill on halls approved by the Bureau cancels mandates that require individuals to carry out insurance and businesses to deliver them and reveals the extension of the Medicaid program for the poor and the disabled, which was adopted under President Barack Obama's law.

An analysis of a previous version of the Senate Act has shown that this would result in more than 20 million uninitiated Americans over the decade compared to the current law.

The revised version of the GOP bill

The latest version tries to attract conservative support by allowing insurers to offer tougher plans along with stronger ones but also achieves a modest addition of billions to support the opium crisis and cover high consumer costs.

With the vote scheduled for next week, which was postponed for an indefinite period, GOP's success in Obama's promised abolition is growing more and more uncertain, despite the recent lobbying of the Trump administration. The Democrats have unanimously rejected the same as the largest groups and insurers of the country.

McCain, 80, is three times surviving melanoma. Records of his medical examinations, issued in 2008, when he was a GOP presidential candidate, showed he had removed precancerous skin lesions and had an initial phase of squamous cell carcinoma.