The email again criticized Obama's nomination of Lazard investment banker Antonio Weiss for a senior Treasury position, POLITICO's Ben White reported.
Warren's objection to Weiss is primarily that he worked on Wall Street, and she is casting him as a symbol of Wall Street's influence on government. Democracy for America has been circulating a petition supporting her opposition of the Lazard investment banker.
Weiss's supporters, meanwhile - and there are many - argue that it is in the country's best interests to have policy-makers at the Treasury Department who have real-world finance experience, and they point out that Weiss is a highly respected advisor who has never worked at a firm that received a taxpayer bailout.
Nevertheless, Senator Warren has turned Weiss into a symbol and is now rallying supporters in an attempt to block him. She is also framing any support for Weiss as an effort by "Wall Street" to win a war in Washington.
"Wall Street knows that Sen. Warren's opposition to Weiss is a game-changing moment in the fight for the future of the Democratic Party. That's why they're pulling out all the stops to try and defeat her," the Democracy In America email continued.
"The Antonio Weiss nomination has become a crucial moment in the fight for the future of this country. We cannot let Wall Street win."
Quite the battle cry.