U.S. Sen. Rubio warns Venezuela's Maduro not to act against opposition

U.S. Senator Marco Rubio visits the Colombia-Venezuela border at the Simon Bolivar International Bridge on the outskirts of Cucuta, Colombia February 17, 2019. REUTERS/Luisa Gonzalez

CUCUTA, Colombia (Reuters) - U.S. Senator Marco Rubio, visiting the Colombia-Venezuela border on Sunday, warned Venezuelan President Nicolas Maduro of severe consequences if he takes action against the country's opposition leader and self-declared president or U.S. citizens.

In a televised interview, Rubio declined to say if he would support U.S. military action against Venezuela, which is mired in a political and economic crisis.