Some of the key points...
1. The book is bad history.
2. There is a volume of footnotes yet the sources are shoddy, cherry picked and biased.
3. M&W fail to make a case that "the Lobby" skews US policy in such a way as to be a detriment to US interests. The U.S. relationship with Israel paradoxically may serve to increase Arab interests in maintaining a good relationship with the U.S.
4. M&W give no compelling reasons for changing U.S. policy
However don't just take my word for it Here is the link: