A bill sponsored by Tennessee Republican Rep. Johnny Garrett to bar immigrants from filing civil lawsuits sets the state for exploitation.

In his new book "The Barn," author Wright Thompson, also a fifth-generation Mississippi Delta cotton farmer, examines the site of the notorious 1955 murder of 14-year-old Emmett Till. Correspondent Jim Axelrod talks with Thompson about illuminating injustice and a Mississippi Delta culture that, Thompson says, has spent decades trying to erase a horrible crime; and visits the barn, which still stands, where Till was beaten to death.

In his new book, author Wright Thompson examines the site of the notorious 1955 murder of 14-year-old Emmett Till, and a Mississippi Delta culture that, he says, has spent decades trying to erase a horrible crime.