US President Donald Trump speaks to the media as he walks to Marine One prior to departing from the South Lawn of the White House in Washington, DC, July 5, 2019.

President Donald Trump said Friday that he is considering signing a executive order to include a citizenship question in the 2020 census.

"We're thinking about doing that. It's one of the ways – we have four or five ways we can do it. It's one of the ways that we're thinking about doing it very seriously," Trump told reporters outside the White House before departing for his private resort in Bedminster, New Jersey.

"We can also add an addition on. So we can start the printing now and maybe do an addendum after we get a positive decision," Trump said. "So we're working on a lot of things, including an executive order."

It's far from clear whether Trump has any leverage, let alone unilateral power, to mandate the question's inclusion in the decennial report. Under Article I of the U.S. Constitution, Congress holds power over the census, not the president.