Sen. Tom Cotton (R-AR) is pressing the IRS to investigate the tax-exempt status of leftist group Southern Poverty Law Center (SPLC), an organization that has been mired in scandal. Cotton argues that a series of recent reports regarding the leftist group’s patently political activities are troubling, and in a letter to the head of the IRS provided to Breitbart News exclusively ahead of its public release questions whether these actions warrant removal of the group’s status as a nonprofit organization. “I am writing to urge you to investigate whether the Southern Poverty Law Center (SPLC) should retain its classification as...