Rep. Trent Franks signs onto the birther bill.

WorldNetDaily (via Dave Weigel) reports that Rep. Trent Franks (R-AZ) has signed onto H.R. 1503, the so-called “birther bill” that would require presidential candidates to submit copies of their birth certificates. Franks is now the 10th co-sponsor to Rep. Bill Posey’s (R-FL) legislation. Earlier this week, Franks admitted to a town hall audience that he had considered filing a lawsuit against Barack Obama on the birther issue, even though in the past, he has affirmed that the President is “a constitutionally natural-born citizen of this country.”