Rep. Steny Hoyer, the House majority leader, will ​call for a floor vote next Tuesday to hold Attorney General William Barr and Commerce Secretary Wilbur Ross in contempt over the White House’s desire to add a citizenship question to the 2020 census.

The development comes as President Trump has scheduled a Thursday afternoon news conference where White House sources told the Post he will announce that he will take executive action to include the question.

Hoyer, a Maryland Democrat, said Barr and Ross ignored congressional subpoenas in an attempt to “subvert the 2020 Census with the addition of a citizenship question meant only to deter minorities from participating and leading to an undercount in parts of the country.​​”​

The Supreme Court last month temporary blocked including the question, saying the administration’s reasoning was “contrived.”

“​Our Constitution is clear: the census must count the number of persons – all persons – residing in the United States​,” Hoyer said in the statement. “That is the only way we can ensure that every community receives an equitable share of resources.​”​

​Ross, who as Commerce secretary oversees the census, said the Justice Department wanted the question on the census to help it enforce the Voting Rights Act of 1965.