A permit issued by the United States government allowing energy giant Chevron Corp. to pump and export Venezuelan oil will be terminated this week.

Maria Corina Machado, the most prominent figure in the country’s opposition movement, argued the measures are needed to stop government repression.

U.S. President Donald Trump on Wednesday said he was reversing a license given to Chevron to operate in Venezuela by his predecessor Joe Biden more than two years ago, accusing President Nicolas Maduro of not making progress on electoral reforms and migrant returns.