] The antiboycott laws were adopted to encourage, and in
] specified cases, require U.S. firms to refuse to
] participate in foreign boycotts that the United States
] does not sanction. They have the effect of preventing
] U.S. firms from being used to implement foreign policies
] of other nations which run counter to U.S. policy.

For those who didn't believe me at Interz0ne that such a department existed, here is your proof. If the US government decides that they don't want US citizens/businesses to participate in a boycott, they've already got a department set up to fine the heck out of you for going against the government's wishes. Right now the department is primarily focused on making sure nobody boycotts Israel.

U. S. Bureau of Industry and Security: Antiboycott Compliance Office