This, this, and even more this.
He is a very intelligent guy who could have created very strong testimony to further his cause (whatever side he is on). Instead he spend 4:15 cracking jokes, which were funny but not suitable for a congressional hearing, and 15 seconds making a point that we should give immigrant workers visas and about wanting Americans to pick it for other immigrants to do work in other parts of the production line. I was extremely excited about him going to that hearing, hoping for some very insightful commentary that would help further the issue. Instead he used it as a continuation of his show. He lost a little of my respect by doing what he did.
Sorry, but that goes in the wrong call folder. I would have much preferred something like "The Word" segment if he was going to pull stuff from his show.