Yes I believe so. But in some countries you need papers to be a citizen.
They can typically become citizens through naturalization.
Citizens don't usually want new immigrants because it is considered that immigrants take the jobs away from them. Also, many new immigrants get some sort of benefits from the government; the US citizens pay taxes for those benefits
Naturalized citizens == ==
About 6/1,000 citizens of Canada are immigrants.
Almost all of them
Congress
Congress
Naturalization
No
Naturalization
No, they are citizens pure and simple.
Unless the US citizen is a Native American, all other US citizens are immigrants or descendants of immigrants. Native American make-up 1%-2% of the total US population.