Former President Bill Clinton dismissed the claims of so-called "birthers" as "ludicrous" in an interview with ABC's "Good Morning America" that aired Monday, warning Republicans against embracing questions about President Obama's birthplace.

"If I were them, I'd be really careful riding that birther horse too much," Clinton said. "Everyone knows it's ludicrous."

While the rumored field of Republican presidential hopefuls have largely dismissed "birtherism," real estate mogul Donald Trump has practically made it the centerpiece of his would-be campaign.

Trump is weighing a run for the GOP nomination next year, and in a series of recent TV interviews has demanded that Obama produce his birth certificate, arguing that questions over whether the president was born in the U.S. are legitimate.

It even led Trump to release his own birth certificate, which, as it turned out, was not his original birth certificate.  

During the 2008 campaign, Obama released a certificate of live birth after some critics first raised questions. Obama was born in Hawaii.

"I think he will fight back," Clinton said of Obama during the ABC interview, "but I think one of the elementary rules of combat is you don't want to get in your opponent's way if he's shooting himself in the foot."