The process and results of the May 2018 Venezuelan presidential election were widely disputed. The opposition-majority National Assembly declared Maduro a "usurper" of the presidency on the day of his second inauguration and disclosed a plan to set forth its president, Juan Guaidó as the succeeding acting President of the country under article 233 of the Venezuelan Constitution. A week later, the Supreme Tribunal of Justice declared that the presidency of the National Assembly was the "usurper" of authority and declared the body to be unconstitutional.