Yesterday the New York Times tried to insinuate that the U.S. military was behind the idea to steal Syria's oil:

Days after President Trump's abrupt decision to withdraw 1,000 American troops from Syria, Gen. Mark A. Milley, the chairman of the Joint Chiefs of Staff, saw a way to turn it around.
The businessman in Mr. Trump had focused on the Syrian oil fields that, if left unprotected, could fall into the hands of the Islamic State — or Russia or Iran. So General Milley proposed to a receptive Mr. Trump that American commandos, along with allied Syrian Kurdish fighters, guard the oil.

Today, 800 American troops remain in Syria.