Senate Homeland Security Committee Chair Rand Paul (R-Ky.) has sent letters to the heads of Immigration and Customs Enforcement (ICE), Customs and Border Protection (CBP) and U.S. Citizenship and Immigration Services (USCIS) to testify before his committee amid growing public controversy over immigration enforcement operations in Minneapolis and other communities. Paul informed the leaders of President Trump’s immigration agencies in a tersely worded letter that “Congress has an obligation to conduct oversight” of what he called the “exceptional amount of funding” the Republican Congress has allocated to secure the borders and enforce immigration laws. “Congress has an obligation to conduct...