FWIW, I don't think Buchanan is a racist. I'm not a big fan of his views on a lot of issues (especiallly concerning Israel), but I think that's been a cheap shot people have hit him with.
One cannot find a single issue with respect to Israel and the Jews in which Buchanan's views are separate and distinct from that of Coughlin. This is not surprising given that Buchanan's father was a big Coughlin supporter and the kids undoubtedly grew up listening to Coughlin because of it. Coughlin became such an embarrassment to the Catholic Church because of his anti-semitic views that they ordered him to stop his radio broadcasts.
Buchanan is no racist! The majority of attacks on him come from Israel firsters...and work endlessly to try to paint Buchanan as a racist and obviously have deceived some. Shame on them! While Buchanan is wrong on some issues, he is ahead of his time on many others. Pat hit the nail with this piece. As you have stated, the issue is not as grave as Paris and we are very fortunate that Mexicans are Christians but our culture which our forefathers have left us will be lost. This is why it is important to slow the pace of immigraton, if not halt it temporarily, until the "new immigrants" assimilate into our culture not vice versa.