Mayor de Blasio says one wrong move in the looming 2020 census count could change the future of the city.

He says New York is in danger of losing at least one, possibly two, congressional seats if there is a lack of participation in the census. That’s why officials are urging volunteers to mobilize their neighborhoods.

“Imagine we lost billions of dollars that we actually deserved because we had the people, but the count didn't represent it,” de Blasio says.

He also says he celebrates the Supreme Court’s decision to reject the Trump administration’s effort to add a citizen question to the 2020 census. He says the change would have potentially scared immigrants away from participating.

New York City’s census response rate was below the national average during the last census in 2010, according to officials.

The mayor also opened the floor for off-topic questions.

He indicated that he may be open to keeping admissions tests for the city’s elite public high schools after he initially said the exams “must be eliminated to diversify student bodies.”

The mayor also told News 12 the progress of his new Hate Crime Prevention office, saying, “It's a carrot and a stick. The carrot is to educate. The stick is very aggressive enforcement.”