In His 1921 "Speech in Congress on Immigration," Why Did

In his 1921 "Speech in Congress on Immigration," why did Lucian W. Parrish believe the United States should have stopped immigration entirely?

A) He argued that immigrants have always disobeyed American ideals.
B) He believed that oppression was an insufficient reason for immigrating to the United States.
C) He thought that immigrants weakened job opportunities for native citizens.
D) He viewed new immigrants as unsympathetic to the Constitution.
E) He said that immigrants brought violence to the United States.