Three states have passed tougher immigration enforcement laws since their leaders believe the federal government can’t or won’t fulfill its responsibilities to provide national security. However, the Justice Department mounted legal challenges to those states by insisting border security is Uncle Sam’s job. Now Tennessee Rep. Diane Black is offering legislation to block funding for any further Justice Department challenges to the state laws. Rep. Black explains why she thinks this move is necessary and reacts to potential criticism ranging from the federal role in border security to the possibility of Congress denying funds for any DOJ investigation the majority doesn’t find acceptable.