The federal government case listed at least fourteen informants, including members of the Harvard faculty.
Chroust was strongly defended by his friend, Harvard Law School dean Roscoe Pound.
Chroust joined faculty of the University of Notre Dame in the summer of 1946 after being recommended by Pound.
Chroust became a naturalized U.S. citizen on February 7, 1951, at a ceremony in South Bend, with Pound serving as his sponsor.
Chroust retired from the full-time faculty at Notre Dame in 1972 and died on January 11, 1982, in South Bend, Indiana.