Yes, if ones could be found willing and able to work. Ask employers whose crops are rotting in the field, or who cannot expand their businesses because they cannot find folks willing to show up on time and do an honest day's work.
You should know that a significant number of illegals are coming here, not to work, but to take advantage of public assistance, free health care and free schools for their kids. They are taking advantage of a welfare system paid for by American citizens -- working citizens designed to care for its own poor citizens, not foreigners in this country illegally.
I've said this all along: American taxpayers have poured billions of dollars into the rathole countries where most illegals come from. In addition, many of our citizens have voluntarily donated money to numerous charitable endeavors aimed at improving life in these countries. If life is so bad in these countries, then it must be so because the people there are unwilling to work to make it better. Money from the US alone will not improve the living conditions of these people. They muse work in their own country for a better life. . If they have a government unwilling to work with them, then they must replace that government with one that will.
We cannot afford to take care of the whole world. The world has to get off its collective duffs and take care of itself.