There is no "we" on this matter. Americans have been sharply divided about immigrants for a long time going back to the 19th century or even before. There is no such thing as an American consensus on immigration. Certainly you don't get to define what is American and what isn't. Neither do I. You're just one person.
"To think otherwise is anti-American, and you do not belong here." is just a useless emotional thought-terminating phrase.
"To think otherwise is anti-American, and you do not belong here." is just a useless emotional thought-terminating phrase.
I say this as an immigrant to the US myself.