Gov. Scott Walker will join other would-be presidential candidates in Iowa on Saturday at an event co-hosted by controversial U.S. Rep. Steve King.

King and the group Citizens United are hosting the Iowa Freedom Summit, a relatively new political event that's drawing a big crowd of GOP presidential hopefuls this year.

Dennis Goldford, a professor of political science at Drake University in Iowa, said that ever since his time in Iowa's legislature, King has made a name for himself speaking out against issues like illegal immigration and gay marriage.

“He does say things that, on the one hand, thrill his supporters as being the essence of common sense and good moral sense,” said Goldford. “On the other hand, these things that he says quite often are taken by his opponents as tremendously inflammatory and toxic.”

King turned heads this week when he referred to an undocumented immigrant invited to President Barack Obama's State of the Union address as a “deportable.”

In addition to his Iowa stop, Walker will reportedly join three other GOP presidential hopefuls in California at an invitation-only event hosted by the Koch brothers' political operation.