There's no mercy in a bunch of silk-clad old men protesting against the legitimate concerns of the citizens of a free and just society and nation. If they had any real courage or faith in Christ, they'd take off their frocks, hie themselves down to "Mejico" and protest the despots who've been destroying those people for centuries.
It sure seems easy for some to condemn the entire Catholic church on the issue of illegal immigration because the Mexicans are predominantly Catholic and the Church reaches out to the "least of our brethren".
Perhaps you missed an earlier post of mine in which I pointed out that what you are advocating is illegal in Mexico. The Bishops would be detained immediately if they attempted what you say. Also, these Bishops are working within an organization that has assigned them specific duties and regions. Their mission was to study the problem from the American side with specific emphasis not on those who successfully cross, but on the victims and minors. Before you criticize the organizational structure of the Church remember it has been functioning pretty effectively for about 2,000 years.