Protesters gather for a rally in the State Capitol rotunda in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

Thousands of protesters gather for a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

A protester holds an American flag at a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

Thousands of protesters gather for a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

People begin gathering outside on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012 to protest right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

Drew Dobson, of Coleman, Mich., protests at a rally at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)p

Protesters sit in the rotunda of the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

Thousands of protesters rally outside the state Capitol as lawmakers push final versions of right-to-work legislation in Lansing, Mich., Tuesday, Dec. 11, 2012. The GOP majority has used its superior numbers and backing from Gov. Rick Snyder to speed the legislation through the House and Senate last week, brushing aside denunciations and walkouts by helpless Democrats and cries of outrage from union activists who swarmed the state Capitol hallways and grounds. (AP Photo/Carlos Osorio)