Language is a give away in alien argument
Bogus arguments are a tip-off that you wouldn't buy the real reasons for what someone is doing. Phony arguments and phony words are the norm in discussions of immigration policy.
It starts with a refusal to call illegal aliens "illegal aliens" and ends with asking for "guest worker" status for people who are not guests but gate crashers. As for the substantive arguments, they are as phony as the verbal evasions.
What about all those illegal workers that we "need"? Many of the illegals are working in agriculture, producing crops that have been in chronic surplus for decades. These surplus crops are costing the American taxpayers billions of dollars in government storage costs and in the inflated prices created by deliberately keeping much of this agricultural output off the market.
Do we "need" illegal workers to produce bigger surpluses?
In California, surplus crops grown and harvested by illegal immigrants are often also subsidized by federal water projects which charge the farmers in dry California valleys far less than the cost to the government of providing that water -- and a fraction of what people in Los Angeles or San Francisco pay for the same amount of water.
Surplus crops grown with water supplied at the taxpayers' expense and raised by illegal workers can be grown elsewhere with water provided free of charge from the clouds and raised by American workers paid American wages.
Naturally, when the real costs of those crops have to be paid by the farmers who raise them, less will be grown -- that is, there will not be as much of a surplus going to waste in government-rented storage bins.