The Problem With Myopia

Michelle Malkin: THE HEAD-CHOPPERS MEET THE HAND-CHOPPERS
illustrates the problem of focusing only on Muslims as the source of the terrorists. Crime has a way of uniting unholy alliances.

What Attitude Problem and Certain Slant Of Light are drawing attention to this facet of the immigration issue.

I am still undetermined about the best policy to pursue. We are going to have to do something.

I would like to know what is it that holds up prosecution of this:”a lack of detention space within the Department of Homeland Security that has forced immigration officials to release non-Mexican illegal aliens back into the United States, rather than return them to their home countries.” ?
I would like an explanation of “the sanctuary policies that provide safe harbors for violent illegal alien gangs”. What are these policies exactly?