This debate between Alex Nowrasteh and Tucker Carlson on Fox News was helpful in working through some of the economic misconceptions regarding immigration. Nowrasteh is an economist who works with the Cato Institute.
One point of interest here is that Tucker Carlson says that an increase in immigration equals an increase in labor supply, thus driving wages down. That only makes sense in the short-term if labor is fixed and cannot innovate, start new businesses, adapt, create wealth, or increase opportunity. If labor can innovate and create opportunity and wealth, as we have seen, it creates an ever changing dynamic.