On November 5, 2007, Sen. Whitehouse introduced the "Voter Caging Prohibition Act of 2007" that would prohibit challenges of voter eligibility on the basis of caging lists. Sens. Leahy, Feinstein, Feingold, Nelson (Fla.), Brown , Klobuchar, Clinton, Kerry , Menendez, Obama, Schumer, and Dodd joined in co-sponsoring the bill
- Senate Bill Would Outlaw "Caging" as Voter Suppression Tactic (press release, Sen. Whitehouse, 11/5/07)
- Whitehouse Introduces Bill to Outlaw "Vote Caging" (video [REAL], Sen. Whitehouse, 11/5/07)
- A Clean, Fair Fight (Editorial, New York Times, 3/5/08)
- Senate Bill Seeks to Restrict Vote Caging (Ben Adler, Politico, 3/25/08)