Mattis is reportedly 'not happy' the White House is blocking his choice for a key staff position

Defence Secretary Jim Mattis is reportedly “not happy” the White House is arguing with him over who should take the top job in the Pentagon’s policy shop, Foreign Policy reports.

According to FP, Mattis wants former George W. Bush era Pentagon official Mary Beth Long to come aboard as Under Secretary of Defence for Policy, but the White House is insisting he go with Mira Ricardel, a Trump transition team member who also served in the Bush administration.

This doesn’t seem to be a fight over qualifications, however.

Instead, FP reports that one of the issues the Trump administration has is that during the campaign, Long was among more than 100 Republican national security leaders who signed an open letter referring to then-candidate Trump as “fundamentally dishonest” and unfit for office, among other complaints.

Long later walked back the letter’s criticism and dropped her “Never Trump” position, telling NPR in November that it was “a moral and civic duty to get behind this president.”

Still, the report from FP suggests an apparent “blacklist” is in effect for Republicans who openly opposed Trump prior to the election.

Some other “Never Trump” Republicans told The Washington Post the reasons they were not being called for national security positions was likely due their opposition. Another, former State Department official Eliot Cohen, said White House jobs were being viewed as “lollipops, things you give out to good boys and girls.”

Theresa Whelan is currently serving in the role as acting undersecretary.

The undersecretary role isn’t the only unfilled job at the Pentagon’s policy office. There are still vacancies in the No. 2 spot, principal deputy under secretary of defence for policy, as well as supporting roles covering cyber, space, Afghanistan-Pakistan, Russia-Ukraine, and nuclear and missile defence policy.

NOW WATCH: Here’s what it’s like to have a drink with President Obama

NOW WATCH: Briefing videos

Business Insider Emails & Alerts

Site highlights each day to your inbox.

Follow Business Insider Australia on Facebook, Twitter, LinkedIn, and Instagram.