Venezuela’s government issued a firm rebuke of President Donald Trump on Tuesday after he threatened to put sanctions on the troubled oil-exporting nation unless its increasingly authoritarian leader, Nicolás Maduro, abandons his plans to rewrite the country’s constitution. Foreign Minister Samuel Moncada accused the U.S. of seeking to topple the embattled Maduro administration by backing the antigovernment protests that have rocked the South American country over the last three months, costing more than 90 lives. He said…