The first immigrants to come to the US were the Europeans. As you should know Christopher Columbus discovered what now is Florida in the US. Soon other Europeans and people came to live in the 'New World'. But if you meant who was the first to come to North America, it would be Vikings. They used the coastal areas as ports and camps when crossing over from Norway and Sweden.
Europeans
Irish,Catholics
the first imigrents were africans but not by choice
Britain and other European countries.
Ellis Island.
1909
the first potato planted in the US was in New Hampshire.
The Germans and other Eurpean immigrants.
Ellis Island
The Europeans were first with over 30 million immigrants in total -Snoady
The names of the first illegal aliens in the United States are not known. There are millions of illegal immigrants that are in the US, as of 2014.
Ellis Island