Noonan is leaving his role as spokesman for the House Armed Services Committee, and once advised Mitt Romney's 2012 presidential campaign on defense policy.
Aides said that Karem and Noonan are expected to help Bush track world affairs on a daily basis and work with him on his foreign policy agenda. They'll work alongside Justin Muzinich, who will serve as Bush's policy chief should he launch a formal campaign, as expected. Muzinich is a former New York-based investment firm manager.
One of the most sensitive tasks Karem and Noonan are expected to tackle is facilitating conversations with Bush's 21-member advisory team of veteran GOP foreign policy experts.
The team, which he unveiled in February, reflects a broad cross-section of GOP thinking, including two former secretaries of state, George Shultz and James Baker; two former CIA directors, Porter Goss and Michael Hayden; former attorney general Michael Mukasey and Paul Wolfowitz, a former deputy defense secretary and lead architect of the Iraq war.
There are no current plans for the group to ever formally meet in person with Bush -- such a gathering might be too awkward given the members' intensely differing views. And given his early fundraising prowess, his standing in early public opinion polls and his family history, it's no surprise that jockeying to advise Bush has been intense, according to some people familiar with the process.
The Wall Street Journal reported this week that an early casualty of the jockeying was Elbridge Colby, a fellow at the Center for a New American Security, who was being considered as one of Bush's foreign policy aides.
But Colby said in an e-mail to The Post that he was never formally offered the job.
Bush aides strongly disputed the reports of infighting and said that Bush welcomes the group's differing views on the world, and that he's been interacting with the experts frequently via e-mail as he develops a broader understanding of foreign affairs.