ATLANTA (AP) — U.S. Rep. Marjorie Taylor Greene filed a lawsuit Friday challenging a state law that a group of voters is using to challenge her eligibility to run for reelection.

The challenge filed last month with the Georgia secretary of state’s office alleges that Greene, a Republican, helped facilitate the Jan. 6, 2021, riot that disrupted Congress from certifying Joe Biden’s presidential election victory. That violates a provision of the 14th Amendment and makes her ineligible to run for reelection, the challenge says.

Greene’s lawsuit asks a judge to declare that the law that the voters are using to challenge her eligibility is itself unconstitutional and to prohibit state officials from enforcing it.

A rarely cited part of the 14th Amendment says no one can serve in Congress “who, having previously taken an oath, as a member of Congress . . . to support the Constitution of the United States, shall have engaged in insurrection or rebellion against the same.” Ratified shortly after the Civil War, it was meant in part to keep representatives who had fought for the Confederacy from returning to Congress.

Georgia law says any voter who is eligible to vote for a candidate may challenge that candidate’s qualifications by filing a written complaint within two weeks after the deadline for qualifying. The secretary of state must then notify the candidate of the challenge and request a hearing before an administrative law judge. After holding a hearing, the administrative law judge presents findings to the secretary of state, who then must determine whether the candidate is qualified.

Free Speech for People, a national election and campaign finance reform group, filed the challenge March 24 on behalf of the group of voters. A hearing before an administrative law judge has been set for April 13.

Greene “vigorously denies that she ‘aided and engaged in insurrection to obstruct the peaceful transfer of presidential power,'” the lawsuit says.

The law only requires the people challenging a candidate’s eligibility to file a written statement of why they believe the candidate isn’t qualified, and that automatically triggers the secretary of state’s request for a hearing before an administrative law judge, the lawsuit says. The fact that a government investigation can be triggered based only on the challenger’s belief violates Greene’s First Amendment right to run for political office, the lawsuit says.

The challenge statute also puts the burden on Greene to prove by a preponderance of the evidence that she didn’t engage in the alleged behavior, and that “burden shifting” violates the due process clause of the 14th Amendment, the lawsuit says.

The lawsuit also alleges that the challenge statute “directly usurps” Congress’ constitutional ability to judge whether a member is qualified.

Finally, a law passed in 1872 removed the disqualifications put in place by the part of the 14th Amendment that the challengers are trying to use against Greene, the lawsuit says.

Voters supported by Free Speech for People filed a similar challenge against U.S. Rep. Madison Cawthorn in North Carolina that has been blocked by a federal judge. The voters are appealing several of the judge’s orders to the 4th U.S. Circuit Court of Appeals.

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