A bipartisan group of senators is attempting to enact more severe sanctions against Russia by inserting them into a popular sanctions bill on Iran.

Top senators like Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (R-Ky.), the heads of the Senate Foreign Relations and the Banking committees, and other lawmakers are aiming to attach the Russia sanctions as an amendment to a bill that cracks down on Iran’s ballistic missile program. The legislation will likely be taken up by the Senate on Wednesday.

"We'll anticipate that amendments addressing Russia sanctions are likely to be offered," McConnell said Wednesday.

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"I'm encouraged that the chairmen of the Foreign Relations and Banking committees, Sen. [Bob] Corker [R-Tenn.] and Sen. [Mike] Crapo [R-Iadho], have already been in discussion with their respective ranking members to work toward a bipartisan agreement. I support that effort."

The vote on the amendment comes shortly before intelligence officials are set to testify about Russia’s alleged interference in the presidential election and a day before former FBI Director James Comey is set to testify in front of the Senate Intelligence Committee.

It is unclear what the amendment will include, though it will likely include elements of other sanctions legislation that has been introduced in the Senate.

Crapo and Banking Committee ranking member Sherrod Brown Sherrod Campbell BrownMnuchin says he and Pelosi have agreed to restart coronavirus stimulus talks Harris faces pivotal moment with Supreme Court battle Remote work poses state tax challenges MORE (D-Ohio) introduced one bill that aimed to codify former President Barack Obama Barack Hussein ObamaObama warns of a 'decade of unfair, partisan gerrymandering' in call to look at down-ballot races Quinnipiac polls show Trump leading Biden in Texas, deadlocked race in Ohio Poll: Trump opens up 6-point lead over Biden in Iowa MORE’s sanctions that he first imposed in 2014 after escalated Russia aggression in Ukraine.

A second bill by Sens. Ben Cardin Benjamin (Ben) Louis CardinPelosi hopeful COVID-19 relief talks resume 'soon' Congress must finish work on popular conservation bill before time runs out PPP application window closes after coronavirus talks deadlock MORE (D-Md.) and John McCain John Sidney McCainAnalysis: Biden victory, Democratic sweep would bring biggest boost to economy The Memo: Trump's strengths complicate election picture Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ariz.), as well as and other senators from both sides of the aisle, also proposed to codify existing sanctions while adding more stringent restrictions on the Russian energy, intelligence and defense sectors.

Sen. Lindsey Graham Lindsey Olin GrahamSteele Dossier sub-source was subject of FBI counterintelligence probe Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Key Democrat opposes GOP Section 230 subpoena for Facebook, Twitter, Google MORE (R-S.C.), Cardin and other lawmakers offered a third bill this year that would allow Congress to veto a decision by the president to roll back Russian sanctions.

All of the senators behind the proposed bills have been part of the talks to add Russia sanctions to the Iran missile bill, aides told The Washington Post.

— This story was updated at 9:51 a.m.