WASHINGTON — The Trump administration issued a new round of visa restrictions and economic sanctions on Friday against the government of President Nicolás Maduro of Venezuela, who has given little indication that he will cede control despite a prediction by a top American envoy that his “dictatorship” would come to an end, “quickly and peacefully.”

The envoy, Elliott Abrams, also noted the possibility of American military intervention, as requested by Juan Guaidó, the Venezuelan opposition leader. But he described it as a distant line of action behind other moves meant to ratchet up diplomatic and economic pressure against Mr. Maduro.

“We continue to say, and we always will, that all options are on the table,” Mr. Abrams told reporters at the State Department. “But I think that anyone who actually looks at American policy in Venezuela could not reach that conclusion.”

Vice President Mike Pence, who has visited the region five times, largely to put pressure on Mr. Maduro, said this week that he personally reassured Mr. Guaidó that military intervention was on the table. But, he said, that decision was ultimately up to President Trump.