Many americans feared immigration because they thought that immigrants:

Immigration has been questionable in this nation as far back as its beginning. At the core of the contention is fear. The genuine issue with migrants is, and dependably has been, the dread that these foreigners will overpower and undermine the lifestyle that makes America great. It is actually an irony given the fact that the nation as it stands now is a nation of immigrants :)

answer; the natural law school;