Regarding: "As many as 11 million undocumented immigrants live in the shadows, most of them Catholics.  ... protect migrants from a deportation machine, perfected under Obama, ...."
- The religion of  undocumented immigrants is not a factor in determining the effectiveness of current immigration laws, or whether those laws need updating, or whether the whole notion of 'illegal immigration' needs to be rethought in legal terms.
-  The immigration policies and procedures during the Obama administrations are the consequence of the current law as well as the consequence of the republican tea party revolt -- no agreement about anything related to immigration. Much of these policies are premised on the Immigration Reform and Control Act (IRCA), Pub.L. 99–603, enacted by Reagan, which gave amnesty to illegal immigrants who entered the United States before January 1, 1982.