TOPEKA, Kan. (AP) -- Secretary of State Kris Kobach says he still anticipates another vote in the Legislature on his plan to move up the date when first-time voters are required to provide proof of their U.S. citizenship.

But legislators aren't sure it will happen.

Kansas has a proof-of-citizenship requirement for people registering to vote for the first time in the state, but it takes effect Jan. 1, 2013. Kobach wants to move up the date to June 15, so the rule is in place ahead of this year's presidential election.

The House approved the change, but it stalled in the Senate.

House members backing Kobach's plan could push again but say they won't without a sign that the Senate would pass the measure. They haven't gotten it, but Kobach remains optimistic.