Do you think immigrants belong here?

Because, if they come here insearch for a better life. Should they stay in there country and fight to make it better. I mean they can come to the U.S and beg for better immigration laws and such, but they can't stay home and try to estabalize their economy. But then I can understand people that scape from N. Korea or other countries where tyrants rule. Well this is my curiosity, excuse me if I sound racist, or my grammar lacks correction.