" "I just think he ought to be honest with the American people and try to win as the real Mitt Romney, not try to invent a poll-driven, consultant-guided version that goes around with talking points, and I think he ought to be candid.

Darrell Issa (R-CA) and Sen.Charles Grassley (R-Iowa).

"We've done twice-a-month (document) productions since last year, and the Attorney General has testified about this matter no less than seven times," a Justice official tells CBS News.There have been at least three House contempt actions against the Executive Branch in the past 30 years.

In 1983, Congress found EPA administrator Anne Gorsuch Burford in contempt for failing to produce subpoenaed documents.

In 1998, the GOP-controlled House Oversight committee found Attorney General Janet Reno in contempt for failing to comply with a subpoena on campaign finance law violations.In 2008, the Democratic-led House Oversight Committee found former White House counsel Harriet Miers and Chief of Staff John Bolton in contempt for failing to cooperate with an inquiry into whether a purge of federal prosecutors by the Bush administration was politically motivated.

Congress went to federal court to seek enforcement of that contempt action, but a compromise was reached with the Executive Branch before any court decision was final.

.Bush in 2004.

Ahead of the Republican primary in Wisconsin, Ryan campaigned with Republican presidential candidate Mitt Romney for five days, helping to propel Romney to a victory there.Romney's potential VP picks Former Republican presidential candidate Rick Santorum speaks at the National Rifle Association convention in St.

Louis, Friday, April 13, 2012.AP Photo/Michael Conroy Former Pennsylvania Sen.

Rick SantorumThe former Pennsylvania senator exited the Republican presidential race on April 10 after a better-than-expected showing against Mitt Romney, who was much better funded, in the Republican primary.