Rick Santorum isn't backing a campaign slogan if it came from gay, black, liberal poet Langston Hughes.

The former Pennsylvania senator is forging ahead with a run at the White House as Republican despite his “Google problem” which elevates an unflattering redefinition of “santorum” to the top of the search giant's results.

And while Santorum has denied he's homophobic – I have gay friends, he said in February – he remains plenty uncomfortable with the notion that his campaign slogan is being attributed to Hughes, who probably was gay, but certainly wasn't conservative.

Progressives have suggested that Santorum's slogan Fighting to Make America America Again is awfully similar to Hughes' poem Let America Be America Again.

At a campaign stop in Henniker, New Hampshire, Santorum was asked about the similarity by a college student, the Union Leader reported.

No I had nothing to do with that,” Santorum said. “I didn't know that. And the folks who worked on that slogan for me didn't inform me that it came from that, if it in fact came from that.”

Santorum also denied the slogan, which is also printed on the campaign literature handed out before the speech, was his: “I'm not too sure that's my campaign slogan, I think it's on a web site.”

It's on the Rick Santorum presidential exploratory committee web site.