Sens. Patrick LeahyPatrick LeahySessions postpones Senate testimony on DOJ funding GOP talks of narrowing ‘blue-slip’ rule for judges GOP bill would create mandatory minimums for crimes against police MORE (D-Vt.) and Susan CollinsSusan CollinsNavy leaders defend Trump's lackluster ship budget Overnight Healthcare: CBO fallout | GOP senators distance themselves from House bill | Trump budget chief blasts score | Schumer says House bill belongs 'in the trash' Collins uses CBO score to rip House healthcare bill MORE (R-Maine) will unveil legislation on Monday aimed at curbing the illegal trafficking of firearms.

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Collins’s spokesman Kevin Kelley told The Hill in an email that details about the bill were coming “shortly.” 

It’s unclear how the legislation would differ from Leahy’s previously introduced bill which would make it easier for federal law enforcement officials to crack down on so-called “straw purchasers.” 

But the news that Collins is on board with Leahy’s effort is the latest evidence of a growing bipartisan consensus to take at least some steps to stem the nation’s epidemic of gun violence.

Leahy’s earlier bill would add a new provision to the criminal code to make it illegal to purchase firearms on behalf of persons who are prohibited from owning them. Federal prosecutors now have little legal basis to file charges against gun traffickers and often must rely on technical paperwork violations to build their cases.

Last week, the Senate Judiciary Committee was scheduled to mark up Leahy’s legislation, Sen. Dianne FeinsteinDianne FeinsteinFeinstein: Comey memos 'going to be turned over' Judiciary chair may call for meeting with Mueller Dem senators accuse Trump of purposefully holding back information MORE’s (D-Calif.) renewal of the federal assault weapons ban, a measure introduced by Sen. Barbara BoxerBarbara BoxerTime is now to address infrastructure needs Tom Steyer testing waters for Calif. gubernatorial bid Another day, another dollar for retirement advice rip-offs MORE (D-Calif.) to increase federal grants for school safety, and Sen. Charles SchumerCharles SchumerGOP senators distance themselves from House ObamaCare repeal bill McConnell: CBO analysis for House bill will repeat 'things we already know' Congress urges Trump administration to release public transit funding MORE’s (D-N.Y.) bill to expand background checks on private gun sales.

The mark-up was delayed until this week, to give Schumer more time to work out a deal with Republicans, who say expanded background checks can’t include any semblance of a national registry to track gun purchases.

Lawmakers have resumed debate over gun control in the aftermath of December’s tragic shooting at an elementary school in Newtown, Conn.

While President Obama is pushing for bans on assault weapons and high-capacity clips as well as mandatory background checks, it is uncertain which of these measures can pass. The nation’s gun lobby and GOP lawmakers have vowed to wage a fierce fight against any new gun ownership restrictions.

Senate Majority Leader Harry ReidHarry ReidThis week: Congress awaits Comey testimony Will Republicans grow a spine and restore democracy? Racial representation: A solution to inequality in the People’s House MORE (D-Nev.) has said however that he would allow a floor vote on any legislation which passes through committee. And on Sunday, Speaker John BoehnerJohn BoehnerLobbying World Jordan won't run for Oversight gavel Oklahoma rep. launches long-shot bid for Oversight chair MORE (R-Ohio) said the House would consider any gun-control measures passed by the Senate.