In a letter titled "Fight For Our Vote," which was published Sunday as an ad in the New York Times, Obama and her voting rights organization When We All Vote called on Americans to continue engaging in democracy amid a historic attack on voting rights.

The letter -- which comes as Congress has yet to move on voting rights legislation at the federal level -- was signed by 30 other civic engagement, voting rights and voter mobilization organizations including the NAACP, Stacey Abrams' Fair Fight Action, Voto Latino Foundation, NextGen America, LeBron James' More Than A Vote and Rock the Vote.

"We stand united in our conviction to organize and turn out voters in the 2022 midterm elections, and make our democracy work for all of us," Obama wrote in the letter.

The former first lady laid out a plan of action and said within the next year, When We All Vote and the coalition of other organizations will work to "recruit and train at least 100,000 volunteers" and "register more than a million new voters."

Obama said the coalition will also enlist thousands of lawyers to protect American voters, work to educate Americans on how to ensure their vote is safe and encourage at least 100,000 Americans to call on their Senators in support of the Freedom to Vote Act and the John Lewis Voting Rights Advancement Act, two proposed pieces of legislation that have stalled in the Senate as a result of the filibuster, which requires 60 votes to overcome.