WASHINGTON -- The Senate's top Democrat is setting Congress' first showdown vote for Thursday on President Barack Obama's gun control drive as a small but mounting number of Republicans appear willing to buck a conservative effort to prevent debate from even beginning.
Majority Leader Harry Reid of Nevada announced his decision Tuesday as the White House, congressional Democrats and relatives of the victims of December's mass shooting in Newtown, Conn., amped up pressure on GOP lawmakers to allow debate and votes on gun control proposals. Twenty first-graders and six educators were gunned down at Sandy Hook Elementary School, turning gun control into a top-tier national issue.
"We have a responsibility to safeguard these little kids," Reid said on the Senate floor, pointing to a poster-sized photo of a white picket fence that had slats bearing the names of the Newtown victims. "And unless we do something more than what's the law today, we have failed."
"We don't have the guts to stand up and vote yes or no? We want to vote maybe? Tell that to the families in Newtown" and other communities where there have been mass shootings, said Senate Judiciary Committee Chairman Patrick Leahy, D-Vt.
But Sen. Ted Cruz, R-Texas, one of 13 conservative senators who signed a letter promising to try blocking debate, said the Senate bill puts "burdens on law abiding citizens exercising a constitutional right." He said none of its provisions "would have done anything to prevent the horrible tragedy of Sandy Hook."
Obama was calling senators from both parties Tuesday to push for the gun bill, according to a White House official.
Reid's determination to stage a vote came despite inconclusive talks between Sens. Joe Manchin, D-W.Va., and Patrick Toomey, R-Pa., aimed at finding compromise on expanding background checks to more gun purchasers.
But Manchin left a meeting in Reid's office late Tuesday and said he hoped a deal could be completed on Wednesday. Such a compromise would be likely to attract bipartisan support because both lawmakers are among their parties' most conservative members.
The checks, aimed at keeping firearms from criminals and certain other buyers, are the cornerstone of Obama's gun plan, which has been struggling in Congress. Democrats have been buoyed by polls consistently showing more than 8 in 10 Americans support subjecting more buyers to background checks.
A Senate vote to begin debating the guns package would mark a temporary victory for Obama and his allies.
Some Republicans, though eager to avoid blocking debate, could vote against the measure on final passage. Coupled with resistance by leaders of the GOP-run House to main parts of Obama's effort -- including bans on assault weapons and high-capacity ammunition magazines -- the ultimate outcome seems shaky for Democrats.
Reid said he did not know if he had the 60 votes he will need to defeat the conservatives' roadblock. But at least eight Republicans have said they want to begin debate or have indicated a willingness to consider it: Sens. John McCain of Arizona, Lindsey Graham of South Carolina, Tom Coburn of Oklahoma, Johnny Isakson and Saxby Chambliss of Georgia, Susan Collins of Maine, Roy Blunt of Missouri and Mark Kirk of Illinois.
But some moderate Democrats are remaining noncommittal and might oppose opening the gun debate, including Sens. Mark Begich of Alaska and Mark Pryor of Arkansas, who are seeking re-election next year.
Begich declined to directly state his position and said of Alaskans, "We like our guns."
There are 53 Senate Democrats and two independents who lean Democratic.
In a written statement, Sen. Mike Lee, R-Utah, said conservatives want to prevent Obama from rushing the legislation through Congress "because he knows that as Americans begin to find out what is in the bill, they will oppose it."
Senate Minority Leader Mitch McConnell, R-Ky., has said he will join the conservatives' attempt to block debate.
The bill would expand required federal background checks to nearly all gun transactions, stiffen penalties for illegal firearms trafficking and provide a small boost in school safety aid.
Eleven Sandy Hook family members representing eight of the shooting victims were on Capitol Hill to lobby senators from both parties for gun legislation, including Isakson.
"We bring a face to this tragedy," said Mark Barden, who lost his 7-year-old son, Daniel. "We bring a very personal perspective. People should listen to what we have to say and move the debate forward. It's not just about our tragedy. Lots of kids are killed every day in this nation. We have to help lead the change."
Some relatives had breakfast with Vice President Joe Biden at his residence in the Naval Observatory. Later, Biden spoke to law enforcement officials at the White House and told reporters that conservatives would not succeed in blocking debate.
"This is not one of these votes that they block a vote and somehow we're going to go away," Biden said. "The American public will not stand for it."
The president's gun-control proposals have hit opposition from the National Rifle Association, which was using the Internet and emails to urge its members -- it claims nearly 5 million -- to tell members of Congress of their opposition.
In GOP-heavy Louisiana, where Democratic Sen. Mary Landrieu is seeking re-election next year, the NRA wrote to its members, "Please contact Senator Landrieu and encourage her to oppose this anti-freedom legislation."
Counteracting that has been an effort by Mayors Against Illegal Guns, one of whose leaders is billionaire New York City Mayor Michael Bloomberg.
The group was running a television ad in Pennsylvania asking voters to contact Toomey and tell him to back expanded background checks. It also said it will keep track of key gun-related congressional roll calls and make the information available to voters and contributors -- a tactic long used by the NRA and other groups.
Manchin has been hoping for a deal with Toomey that would expand the requirement to sales at gun shows and online while exempting other transactions, such as those involving private, face-to-face purchases.
Currently, the checks are required only for sales through licensed gun dealers.