A new memo released by a U.S. congressional committee this week confirmed that a longtime Republican redistricting specialist was directly involved in efforts by the Trump administration to add a citizenship question to the 2020 U.S. Census, a new court filing in New York federal said.

Attorneys for the New York Immigration Coalition wrote in the filing that evidence released this week by the U.S. House Oversight Committee corroborated that claim, first made in May.