Sen. John McCainJohn Sidney McCainAmerica's newest comedy troupe: House GOP Michelle Malkin knocks Cokie Roberts shortly after her death: 'One of the first guilty culprits of fake news' Arizona Democratic Party will hold vote to censure Sinema MORE (R-Ariz.) on Sunday expressed opposition to possible GOP efforts to filibuster a Senate gun-control measure, saying he did not “understand” the move to block debate.

“I don’t understand it,” said McCain on CBS’s “Face the Nation.” “The purpose of the United States Senate is to debate and to vote and to let the people know where we stand.”

ADVERTISEMENT

“What are we afraid of? Why would we not want… if this issue is as important as all of us think it is, why not take  it to one of the world’s greatest deliberative bodies – that’s one of the greatest exaggerations in history by the way – but you know why not take it up, an amendment and debate. The American people will profit from it,” said the Arizona senator.

“I don’t understand why United States senators want to block debate when the leaders said we could have amendments,” McCain added.

A number of GOP lawmakers, including Sens. Rand PaulRandal (Rand) Howard PaulOn The Money: House votes to avert shutdown, fund government through November | Judge blocks California law requiring Trump tax returns | Senate panel approves three spending bills Paul objection snags confirmation of former McConnell staffer Defense bill talks set to start amid wall fight MORE (Ky.), Mike LeeMichael (Mike) Shumway LeeZuckerberg woos Washington critics during visit Zuckerberg to meet with lawmakers to discuss 'future internet regulation' Hillicon Valley: Election security looms over funding talks | Antitrust enforcers in turf war | Facebook details new oversight board | Apple fights EU tax bill MORE (Utah), Marco RubioMarco Antonio RubioLiberal super PAC launches browser extension replacing 'Mitch McConnell' with 'Moscow Mitch' Trump faces difficult balancing act with reelection campaign Republicans wary of US action on Iran MORE (Fla.), and Ted CruzRafael (Ted) Edward CruzState Department's top arms control official leaving Sanders NASA plan is definitely Earth first Trump judicial picks face rare GOP opposition MORE (Texas) wrote to Senate Majority Leader Harry ReidHarry Mason ReidBarr fails to persuade Cruz on expanded background checks Harry Reid warns Trump 'can be reelected' Homeland Security Republican accuses Navy of withholding UFO info MORE (D-Nev.) vowing that they would “oppose the motion to proceed to any legislation that will serve as a vehicle for any additional gun restrictions.” 

Reid is planning to bring to the Senate floor this month legislation that would expand background checks, toughen penalties on straw purchasers of firearms and provide funding for school safety. But the background checks provisions have attracted opposition from GOP lawmakers after efforts to forge a bipartisan compromise faltered. 

The Senate vote comes as the White House is intensifying effort to pressure Congress to enact gun control, with Obama holding events with families of victims of gun violence and taking his message on the road to states which have experienced mass shootings.

Obama press secretary Jay Carney on Wednesday said it would be “shameful” for Republicans to filibuster a gun-control bill.

The Senate measure, though, is unlikely to attract support in the GOP House and Sen. Chuck GrassleyCharles (Chuck) Ernest GrassleyOvernight Health Care — Presented by Partnership for America's Health Care Future — Pelosi unveils signature plan to lower drug prices | Trump says it's 'great to see' plan | Progressives pushing for changes Trump: 'Great to see' Pelosi plan to lower drug prices Pelosi unveils signature plan to lower drug prices MORE (R-Iowa) is also readying his own gun-control bill as an alternative to the Democratic proposal. 

Appearing with McCain, Sen. Charles SchumerCharles (Chuck) Ellis SchumerSchumer, Pelosi push Trump to back universal background check bill Sinema says she would back Kennedy in race against Markey Democrats threaten to withhold defense votes over wall MORE expressed optimism that if the bill proceeded to the floor, a measure on background checks could pass.

“If we go to the floor, I’m still hopeful that what I call the ‘sweet spot’ background checks can succeed. We are working hard there. Sen. [Joe] Manchin (D-W.Va.) and Sen. [Mark] Kirk [R-Ill.] have a few ideas that could modify the proposal.”

McCain said he would welcome a debate on background checks on the Senate floor.

“Everybody wants the same goal to keep the guns out of the hands of criminals and the mentally disabled. Background checks are being conducted. Are they sufficient, are there ways to improve those? Then I think that’s something that the American people and certainly Congress could be helped by if we have a vigorous debate and discussion,” said McCain.