Crooks and Liars has the story Why Alan Grayson Was Kept Off Benghazi Committee.

When we look at who makes up the Dems, we notice that there was nobody selected from House Committee on Foreign Affairs, which seemed very odd to me, as well as to others that have also mentioned this.
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So why was he included on the committee now? I’ve been checking around since the announcement was made and a source who wishes to remain anonymous said Rep. Steny Hoyer was afraid that Grayson would be too rambunctious for his taste, and so used his power to keep him off the committee — despite the fact that Eliot Engel, the ranking Democrat on the Foreign Affairs committee, had already handpicked Rep. Grayson and gave his selection to Nancy Pelosi. Steny Hoyer went crying (to who, we don’t know) and Nancy Pelosi then pulled Grayson from the panel.

I do not think Nancy Pelosi’s pleas for support for Democrats in the House will get any favorable support from me ever again. I don’t know how many times we Democrats can be stabbed in the back by our own leaders and yet be expected to continue to support them.