Trump economist points to 'great signs' of easing inflation, predicts fuel costs will 'plummet' with Iran deal

National Economic Council Director Kevin Hassett attempted to ease concerns over rising fuel costs on Sunday, as hopes of a deal with Iran to reopen the Strait of Hormuz linger on the horizon.

"We expect energy prices as soon as there's a deal to plummet," he told Fox News' Jackie DeAngelis.

"And when that happens, then there'll be a lot of room for the Fed to do the right thing and lower rates..."

Hassett's remarks come shortly after Trump-nominated Kevin Warsh was sworn in as the new Federal Reserve chair ...