Kansas asks court to exclude voters over citizenship proof

Kansas is asking the federal appeals court in Denver to keep thousands of people who haven't yet provided documents showing they are U.S. citizens from voting in November.

Judges are set to hear arguments Tuesday over how the state enforces proof-of-citizenship requirements for voters who register at motor vehicle offices.

A federal judge in May temporarily blocked Kansas from disenfranchising about 18,000 people who registered at motor vehicle offices without paperwork such as birth certificates or naturalization papers. The state wants the court to overturn that order, which it says could affect as many as 50,000 potential voters by this fall.

Kansas Secretary of State Kris Kobach says it doesn't make sense to hold people registering at motor vehicle offices to a different standard than those registering elsewhere.