An annual summary from Homeland Security’s inspector general said the department initiated 1,389 investigations into internal matters, leading to 318 arrests and 260 convictions of DHS employees. In 2011, the auditor -- which describes itself as “the principal agency within the department with the authority to investigate employee corruption” -- found instances of bribery, child pornography and “nonconsensual sexual contact” with Immigration and Customs Enforcement detainees among the crimes DHS staff allegedly committed.