Undocumented immigrants make up about 20 percent of the u.S. Workforce is a false statement, they make up only about 5 percent.
Step-by-step explanation:
According to the Pew Research, the United States holds about 40 million undocumented or unauthorized diverse immigrants who originated from other regions of the world but settled in the US illegally.
They are part of the US civil workforce and are employed in a wide array of jobs which mostly requires unskilled labor. They are mostly employed in construction, agriculture, transportation, manufacturing and service-based industries. Most of these immigrants come from Latin American countries like Mexico, and also from Asia. They demand less wages than the American workers and hence are employed in the US They are mostly settled in states like California, Texas where their numbers are more than in other states.