Critics have cautioned that Foxconn has made promises before to invest in the U.S. and not followed through. Foxconn promised in 2013, for example, to invest $30 million and hire 500 workers for a new, high-tech factory in Pennsylvania that was never built. State Sen. Alberta Darling, co-chair of the Wisconsin Legislature's budget committee, said any deal would be examined with a "fine-toothed comb" and need to win approval by the Republican-controlled Legislature.