That sounds like an attempt to ban political expression that is certainly protected by the First Amendment.
Congress has been in a state of deadlock for too long to pass any actual laws, so this type of performative theater ahead of midterm elections is what passes for statesmanship.
I think it's a bad law and he's making a big mistake. I'm still a fan though.
> The act does not apply to contracts worth less than $1,000, or to companies that offer to provide the goods or services for at least 20 percent less than the lowest price quoted by a business that has complied with the certification requirement.
So, a contractor if free to boycott as long as they cost the taxpayer a little bit less.
Foreign governments can’t force government contractors to comply with boycotts. This bill AFAIK simply closes the loophole of Palestine not technically being a foreign government.