What makes you think that immigration is a “destabilizing economic force”? This has been disproven countless times by both left and right-wing groups.
Another salient point is that most immigrants are not employed in low-wage jobs anymore, and have been a driving force in the US economy since it’s foundation.
Traditional Tradesman you are a descendant of immigrants to America, Donald Trump’s (current) wife is a first generation Slovenian Immigrant, many of the people paying you your paycheck bi-weekly are likely immigrants.
We gain virtually nothing by closing ourselves off to immigrants to the USA, and we will begin a cycle of harsh nationalism and xenophobia that is hard to stop.