President-elect Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE is considering ExxonMobil chief Rex Tillerson to be secretary of State, according to MSNBC host Joe Scarborough.

Scarborough tweeted that while Trump thought his meeting with potential nominee Mitt Romney was “great,” he’s also started considering Tillerson.

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The Trump transition team did not respond to a request for comment. An Exxon spokesman also declined to comment on Scarborough’s report.

Texas native Tillerson has led the United States’s largest oil company since 2006 and has worked there for more than four decades.

Trump reportedly is also considering Romney, the GOP's 2012 presidential nominee, as well as former New York City Mayor Rudy Giuliani, retired Gen. David Petraeus and Sen. Bob Corker Robert (Bob) Phillips CorkerHas Congress captured Russia policy? Tennessee primary battle turns nasty for Republicans Cheney clashes with Trump MORE (R-Tenn.) for the top diplomatic post.

Romney's inclusion on the shortlist has sparked controversy with many from Trump's inner circle. Many close to Trump, including top aide Kellyanne Conway, have publicly blasted Romney, who was a sharp critic of Trump during the presidential campaign. Trump met with Romney on Tuesday night.

Tillerson's selection would put a spotlight on Exxon, a major corporation with a wide reach and operations in dozens of countries.

The company has numerous partnerships with Rosneft, Russia’s state-owned oil company, and has lost more than $1 billion due to the sanctions the United States imposed on Russia, according to RT, a Russian state-owned news service.

Tillerson, who made $27.3 million last year, could clash with Trump on some high-profile issues.

For example, Tillerson believes in man-made climate change, which Trump has dismissed as a hoax.

Exxon supports the Paris climate agreement and wants the United States to impose a tax on carbon dioxide emissions, both policies that Trump strenuously opposes.

The company has also been in a high-profile fight in the last year with environmentalists and some Democratic state attorneys general over its past position on climate change.

Greens say Exxon knew decades ago that fossil fuels cause climate change but tried to sow doubt publicly about it in order to fight policies that could hurt its finances.