Profits for Exxon Mobil and Chevron were slammed by slumping fuel margins as the prospect of U.S. tariffs on two major oil suppliers threatens to make the refining business even worse.

Chevron is holding talks with the Trump administration amid calls by top Republican officials for the company to exit the ...

The energy giant is spending nearly $50 billion to expand the Tengiz oil field, allowing it to pump one million barrels a day ...