AUSTIN (Nexstar) -- Texas is taking the Biden administration to court over access to citizenship data ahead of the election, Attorney General Ken Paxton announced Tuesday night. Two weeks ago, Paxton demanded the Department of Homeland Security verify the citizenship status of people he says "may be illegally registered to vote" in Texas. He included a list of 450,000 voters whose citizenship status may be in question because they registered to vote without a state driver's license or ID. Paxton said the majority of those 450,000 are likely citizens and eligible to vote, but "Texas has no way of knowing" if they are noncitizens without the federal data. “The Biden-Harris Administration has refused to comply with federal law, presenting yet another obstacle for Texas to overcome in ensuring free and fair elections in our state,” Attorney General Paxton said. “The law demands that they provide important information regarding the citizenship of nearly half a million potentially ineligible voters. Since the Biden-Harris Administration has chosen to ignore the law, I will see them in court.” Federal and state law prohibits noncitizens from voting. But federal law also prohibits Texas from requiring proof of citizenship from people trying to register to vote. That, Paxton says, could allow some ineligible people to slip through the cracks. Texas Secretary of State Jane Nelson also joined the lawsuit. “The federal government is obligated to provide states with information to maintain voter rolls and prevent non-citizen voting,” Secretary Nelson said. “Texas is taking action to compel these federal agencies to do their duty and supply the state with the required information we have repeatedly requested.”   Texas is asking a federal court to compel DHS and U.S. Citizenship and Immigration Services to provide the immigration and citizenship status of each of the 450,000 people. Nexstar has contacted DHS, USCIS, the Attorney General's Office, and the Texas Secretary of State for more information.