Both of South Carolina’s U.S. Senators, Lindsey Graham and Jim DeMint, are in Iowa today doing some last-minute campaigning on behalf of the Republican presidential candidates they have endorsed. And they didn’t forget to bring a little of that SC scorched earth election style to the Hawkeye State.

Graham expected to give pep talks at Iowa Republican caucuses today for U.S. Sen. John McCain of Arizona, while DeMint planned to do the same on behalf of former Massachusetts Gov. Mitt Romney.

South Carolina and Mississippi are the only states to send both their U.S. senators to Iowa to campaign for competing White House candidates.

As they traveled to Iowa, Graham and DeMint delivered shots at each other’s candidates.

Graham, a first-term Seneca Republican, rebutted Romney’s recent claim that presidents don’t need to be foreign policy experts.

“The times that we live in now require all the foreign policy expertise a president can muster,” Graham said in an interview. “To say otherwise is naive. In Senator McCain, the Republican Party has the best-qualified commander in chief by far.”

DeMint, a first-term Greenville Republican, criticized McCain’s support for a major immigration bill that died last summer after tying up the Senate for six weeks.

Romney, DeMint said, was the first 2008 White House candidate to oppose what DeMint ridiculed as “the McCain-Kennedy amnesty bill.” [JAMES ROSEN - McClatchy Newspapers]

Ahh yes, I would say this is reflective of what’s been going on here for the last few months. And it’s a pretty good sample of what the nation will experience for ten fun-filled days starting next week.