US President Donald Trump’s plan to revoke Chevron Corp.’s operating license in Venezuela threatens to force the nation’s oil sector back into the shadows, paving the way for corruption and huge discounts in the Asian market.

The move appears to end the U.S. company’s work in the oil-rich country and was prompted by what President Trump said was strongman Nicolás Maduro’s failure to accept deportees.

Oil prices jumped Thursday as traders assessed the impact of potential tariffs on Canadian oil imports after President Trump said levies against Canada and Mexico would go into effect next week, adding to supply worries following the announced cancelation of Chevron's license to operate in Venezuela.