Dallas activist Vicki Middleton and her LifeandLiberty.org Web site are co-sponsors of the "Obama: The First 100 Days" rally hosted by Texas Gov. Rick Perry Monday night in Garland.
But on her "radio minute" show Monday, Middleton -- the wife of a former ARCO oil executive -- questioned whether Obama is even a citizen of the U.S.
Although Hawaii's Republican officials have said Obama's birth certificate is authentic -- and although his birth was reported at the time in birth listings in the Honolulu Advertiser newspaper -- some activists have continued to ask for more proof.
(Middleton's commentary airs during the morning on KSKY/660 AM. The audio was not posted by midday Monday on her Web site.)
Middleton's organization is co-sponsoring the "town hall" rally along with a local carpet-cleaning company.
It's a promotion for KSKY, the No. 43-ranked radio station in the Dallas-Fort Worth market, which also promoted some of the recent "Tea Party" rallies.
KSKY personality Dwayne Horner, who promoted some Tea Party rally Web sites, described Perry as "kind of the ringleader" for the event.