There actually is a good deal of money in law enforcement for this kind of tool. Anti-trafficking efforts are becoming more and more of a priority at the federal, state, and local levels. There is also a lot of demand for this solution as demonstrated by our user base.
Federal grants are increasingly common, local and state multi-disicplinary task forces are being established more and more frequently, and they need solutions for dealing with these kind of problems.
Sex trafficking is rarely an immigration problem. According to the DOJ, 83% of their cases deal with victims of sex trafficking who are U.S. citizens and trafficked by U.S. citizens. The remaining 17% are foreign nationals. This is a homegrown problem, generally.