igration ▁reform ▁which ▁includes ▁legal ization ▁of ▁una ut hor ized ▁imm igr ants ▁might ▁add ▁consider ably ▁to ▁U . S . ▁G ross ▁Dom estic ▁Product ▁( G DP ) ▁over ▁ 1 0 ▁years , ▁and ▁increase ▁w ages ▁for ▁workers ▁generally . ▁ ▁Ra úl ▁H ino j osa - O j eda , ▁found ing ▁director ▁of ▁the ▁North ▁American ▁Integr ation ▁and ▁Development ▁Center ▁at ▁the ▁University ▁of ▁California , ▁Los ▁Angeles , ▁has ▁estimated ▁that ▁in ▁just ▁the ▁first ▁three ▁years ▁following ▁legal ization ▁for ▁und ocument ed ▁imm igr ants , ▁the ▁" high er ▁ear ning ▁power ▁of ▁newly ▁legal ized ▁workers ▁transl ates ▁into ▁an ▁increase ▁in ▁net ▁personal ▁income ▁of ▁$ 3 0 ▁to ▁$ 3 6 ▁billion , ▁which ▁could ▁generate ▁$ 4 . 5 ▁to ▁$ 5 . 4 ▁billion ▁in ▁additional ▁net ▁tax ▁re venue . ▁Moreover , ▁it ▁is ▁estimated ▁that ▁an ▁increase ▁in ▁personal ▁income ▁of ▁this ▁scale ▁would ▁stim ulate ▁consumer ▁sp ending ▁sufficient ▁to ▁support ▁ 7 5 0 , 0 0 0 ▁to ▁ 9 0 0 , 0 0 0 ▁jobs ." ▁ ▁A ▁ 2 0 1 3 ▁study ▁by ▁the ▁Work ers ▁Def ense ▁Project ▁and ▁the ▁University ▁of ▁Texas ▁sampling ▁construction ▁sites ▁in ▁five ▁Texas ▁cities , ▁found ▁half ▁of ▁construction ▁workers ▁there ▁were ▁und ocument ed . ▁ ▁Bro ken ▁families ▁The ▁U . S . ▁imm igration ▁system ▁determ ines ▁who ▁enters ▁the ▁country , ▁and ▁how ▁many