Newt Gingrich, who served as speaker of the House from 1995 to 1999 and ran for president in 2012, is one pick with plenty of Washington experience.
He helped lead Republicans to victory with a Contract with America, that helped the GOP win the House in 1996 for the first time in over 40 years. While he was speaker, Congress passed a balanced budget and welfare reform.
Gingrich has already received vetting paperwork, met with the presumptive GOP nominee in New York City's Trump Tower shortly after the Fourth of July weekend and campaigned with him in early July. Further, he told Fox News that if he's asked, he "would feel compelled to serve the country."
Trump's relationship with the ex-House speaker, however, hasn't always been rosy while on the campaign trail. After Trump's attacks of a Hispanic federal judge, Gingrich called the comments "inexcusable" and "one of the worst mistakes Trump has made."
The billionaire fired back in June on Fox News: "I was surprised at Newt. I thought it was inappropriate what he said."