July 18, 2020 | 10:36am

President Trump is expected to sign an executive order that will officially forbid illegal immigrants from being included in the 2020 United States census.

It is unclear when the order will officially come down, according to Reuters, which first reported the news.

The decennial count of the US population plays an enormous role in determining how federal money is spent and in deciding the allocation of representation in the 50 states. Population shifts between the decades can have significant consequences.

New York and Ohio lost two members of the House of Representatives after the 2010 census, while Texas picked up four.

The Trump administration has long sought to prevent Mexicans in the US illegally from influencing the official count. An original plan to ask 2020 census respondents their immigration status was thrown out by the Supreme Court.

The order, when it comes, will likely face a legal challenge from Democrats.