"Dan's experience in the sector is unparalleled. A total professional, I have no doubt that Dan will do a great job!" Trump tweeted on Friday.
"There was no quid pro quo in the sense of what those folks out there would like for it to be," the outgoing Department of Energy secretary told Fox News.
As more details between the U.S. and Ukraine surface during impeachment investigations, Perry's travels to Ukraine are under question.
The energy secretary said Iran "could pay a very dear price economically" but added that Trump is "not interested in going to war."
ABC made its Season 28 roster announcement Wednesday morning, and it did not take Twitter very long to respond with a boycott threat once Spicer's name was revealed.
The Trump administration admitted it had made seven approvals for the sharing of technological information with Saudi Arabia without telling Congress.
Israel aims to influence the framework of any U.S.-Saudi nuclear deal to ensure its concerns are taken into account.
It is not just the election that Russia has been accused of hacking.
President Trump is supposed to be the "coal president," but his own appointees may have just lost thousands of coal jobs.
The president's plan to subsidize coal and nuclear power would interfere with free markets, says energy market regulator.
Energy Secretary Rick Perry suggested sexual assault could be prevented with fossil fuels.
Even if Trump actually did release his tax returns, the Democrats win.
The former Texas governor has pledged to renew America's nuclear weapons arsenal.
Man-made earthquakes, caused by fracking, threaten to take out a crucial part of the nation's energy infrastructure. But don't expect Rex Tillerson, Scott Pruitt or Rick Perry to do anything about it.
The move was seen as a bad sign for the campaign's future.
The 80-minute debate featured seven Republican candidates whose polling numbers were too low to qualify for the prime-time event on Fox News.
The second-tier Republican presidential candidates had trouble editing down their Hillary critiques.