It seems likely that no state legislature this year will pass a bill, requiring presidential candidate birth certificates as a condition of ballot access. The Missouri bill that had contained such a provision, SB 282, passed the legislature today, but a few days ago a conference committee deleted the “birth certificate” part of the bill.
The Oklahoma bill, SB 91, has passed both houses, but the two versions differ. The version in one house accepts a certified copy of the birth certificate, but the version in the other house demands an original. The Conference Committee members were named on May 5, but they have not met, and it is likely the Oklahoma legislature will only be in session for another week.
As reported previously, the only state legislature that passed one of these bills had been Arizona, but the Governor had vetoed it. It seems somewhat plausible that when President Obama produced his birth certificate earlier this month, that took some of the interest away from these bills.