Stocks rose as more companies released quarterly results while Steven Mnuchin said the administration was close to "major tax reform."
The Trump economic advisor said, "The right baseline to judge us against is: Do we grow the economy?"
Oil prices were largely mixed on Thursday after steep losses the previous session.
Mnuchin says he hopes passing a tax overhaul will not "take till the end of the year."
Bill O'Reilly's amended contract suggests that the ousted Fox News host will receive up to one-year's salary, a source tells CNBC.
The IMF chief also says U.S. tax reform can benefit both the domestic and global economy if it is tailored the proper way.
Shares dropped just over 1 percent on the news.
First-time claims for state unemployment benefits were expected to total 242,000 in the most recent week, up from the 234,000 claims reported for the previous week.
Powell said parts of too-big-to-fail regulations were "inappropriately applied to small and medium-sized" banks.
Verizon says total revenues for its wireless business fell by 5.1 percent from a year ago.
A bright spot amid steady results was Sky's announcement of a $250 million tie-up with U.S. cable network HBO to produce content until 2020.
Asian shares traded sideways on Thursday, following key earnings on Wall Street and a sharp fall in oil prices.
See which stocks are posting big moves after the bell.
Tillerson said "the Trump administration is currently conducting across the entire government a review of our Iran policy."
U.S. equities closed mostly lower on Wednesday, with IBM and oil prices pushing down the Dow Jones industrial average.
Stanley Fischer, vice chairman of the Federal Reserve, said that spillovers from tightening "will be manageable."
After the ouster of Bill O'Reilly amid allegations of sexual harassment, Tucker Carlson will take over the time slot.
Oil steadied on Wednesday after OPEC said it was committed to eroding a global supply overhang that has dogged markets since 2014.
The notorious pharma bro Shkreli denies claims he looted a drug company he founded to pay off hedge fund investors he allegedly defrauded.
Chaffetz announces on Facebook that he will not run any office in 2018 and "return to the private sector."