Actually there is a fair amount of scholarly evidence to suggest that the Holocaust was an afterthought in the Allied struggle against the Nazi's. There was also arguments that the U.S. did not allow the entry of many Jewish immigrants who were trying to flee the Nazis before the start of the "Final Solution". If it was in Poland, unless I am mistaken that would not be American soliders liberating them but rather Russian soldiers.
Boycott? What's there to boycott if you just choose not to watch it in the first place? So if CNN changes some, we can call the boycott off? I wouldn't plug into the channel for all the T in China.
Actually, after seeing the February ratings, I don't think there are enough people watching CNN to conduct a boycott.
The tragedy of the S.S. St. Louis
There are many reasons to refuse to watch the Commie News Network. However, airing a show that admits that the Holocaust wasn't the foremost thing on the FDR's mind in regards to WW2 isn't one of them.