The legal challenges are only the latest in a wave of litigation against the Trump administration, accusing the president of infringing on Congress’ powers by acting outside the bounds of the law. Some of the lawsuits’ claims also echo acourt battle during Trump’s first presidency, when he launched a commission to study voter fraud after claiming mass fraud in the 2016 election. That commission folded under a mountain of lawsuits. The lawsuits, both filed in DC’s federal district court, take aim at Trump’s efforts to push states to adopt a requirement that voters show documents proving their citizenship while registering and allege Trump’s order oversteps in its attempt to force states to end the practice of accepting mail ballots that arrive after Election Days.

Three organizations sued Monday over President Trump’s executive order that aims to require proof of citizenship when individuals register to vote. The lawsuit claims Trump is overstepping his authority and also challenges a provision that seeks to prevent states from accepting mail-in ballots received after Election Day. “Under our Constitution, the President does not dictate election rules. States and Congress do,” the complaint states. The suit was filed in federal court in Washington, D.C., by the League of United Latin American Citizensn (LULAC), Secure Families Initiative and the Arizona Students’ Association.

The Trump administration faces two federal lawsuits from leftwing groups over President Donald Trump‘s executive order requiring proof of U.S. citizenship to register to vote and directing states to reject mail ballots received after Election Day. Filed on Monday in Washington, D.C., one suit comes from nonpartisan advocacy groups, including the League of United Latin American Citizens, Secure Families Initiative, and the Arizona Students’ Association. The other was brought by top Democratic organizations and party leaders, who argue the directive unlawfully overrides state and congressional authority over election rules. “Under our Constitution, the President does not dictate election rules. States and Congress do,” the complaint from the three groups said. It called the order “an attack on the constitutionally mandated checks and balances that keep American elections free and fair.” Trump’s order, signed last week, instructs the Election Assistance Commission to require proof of citizenship on the national voter registration form and orders the Defense Department to add similar requirements for military and overseas voters.