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... That's because the state has been there, done that, and all but a few Republicans would prefer not to go there again. Kansas imposed a proof-of-citizenship requirement over a decade ago that grew into one of the biggest political fiascos in the state in recent memory.

The law, passed by the state Legislature in 2011 and implemented two years later, ended up blocking the voter registrations of more than 31,000 U.S. citizens who were otherwise eligible to vote. That was 12% of everyone seeking to register in Kansas for the first time. Federal courts ultimately declared the law an unconstitutional burden on voting rights, and it hasn't been enforced since 2018.

Kansas provides a cautionary tale about how pursuing an election concern that in fact is extremely rare risks disenfranchising a far greater number of people who are legally entitled to vote. The state's top elections official, Secretary of State Scott Schwab, championed the idea as a legislator and now says states and the federal government shouldn't touch it.

"Kansas did that 10 years ago," said Schwab, a Republican. "It didn't work out so well." ...