A liberal group is urging Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE not to select Sen. Tim Kaine Timothy (Tim) Michael KaineNames to watch as Trump picks Ginsburg replacement on Supreme Court Barrett seen as a front-runner for Trump Supreme Court pick Biden promises Democratic senators help in battleground states MORE (D-Va.) as her running mate because of his positions on trade and banking regulation.

"Making Senator Tim Kaine our vice presidential candidate could be potentially disastrous for our efforts to defeat Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE this fall," said Charles Chamberlain, executive director of Democracy for America. The group had endorsed Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE during the Democratic primary.

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Chamberlain's statement comes as Kaine appears to be the favorite to be Clinton's vice presidential pick. Clinton is expected to announce her running mate on Friday.

But Kaine is also sparking concern from liberal groups.

Chamberlain criticized Kaine for voting for fast-track authority for the "job-killing Trans-Pacific Partnership." He also argued that Kaine has participated in a "push for bank deregulation."

Kaine on Monday signed a letter — along with Democratic Sens. Mark Warner Mark Robert WarnerIntelligence chief says Congress will get some in-person election security briefings Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House approves bill to secure internet-connected federal devices against cyber threats MORE (Va.), Gary Peters (Mich.) and Bob Casey Robert (Bob) Patrick CaseySecond GOP senator to quarantine after exposure to coronavirus GAO report finds brokers offered false info on coverage for pre-existing conditions Catholic group launches .7M campaign against Biden targeting swing-state voters MORE (Pa.) — to call for the easing of reporting requirements under a liquidity rule so that they would be less burdensome for regional financial institutions. He also signed a bipartisan letter with 70 signatures that urged the Consumer Financial Protection Bureau to tailor their rules so that they don't hurt community banks and credit unions.

"It should be disqualifying for any potential Democratic vice presidential candidate to be part of a lobbyist-driven effort to help banks dodge consumer protection standards and regulations designed to prevent banks from destroying our economy," Chamberlain said.

Another liberal group, the Progressive Change Campaign Committee (PCCC), also urged Clinton on Thursday to choose a running mate who opposes the Pacific trade deal and supports Wall Street reform.

"Otherwise, there will be a giant opening for Trump and other Republicans to outflank Democrats on economic populism issues and win important swing votes," PCCC Co-founder Stephanie Taylor said in a statement that did not name any of the potential vice presidential nominees.