Which of the following is true of campaign finance regulation in Texas?
1) Since the 2010 Citizens United decision, unions in Texas have been able to establish a PAC for electioneering purposes.
2) Texas lacks laws that enforce transparency on PACs with respect to disclosure of their donors.
3) The Texas Ethics Commission has often been criticized for enforcing campaign finance laws too rigidly.
4) The Citizens United decision invalidated the Texas law prohibiting direct campaign contributions by unions and corporations.