Any American individual or company can boycott Israel -- unless that company joins a foreign state's boycott against Israel as part of a commercial agreement. If it decides to boycott Israel on its own, it is perfectly legal. $1,000 to AIPAC if you can prove me wrong.
Palestinians, IDF clash in Jalazone after funeral of teen killed by IDF on Friday (Haaretz)
from the article: Israel's boycott law: The quiet sound of going fascist