[guard-of-terra]

But why they actually do it? Why they enforce such laws (or do they?) They're net losers from doing so.

You could not force them to if they didn't want, I argue, so why they bother?

[Nick_C]

Because the U.S. won't ratify the Treaty if they don't. Same thing happened here in Australia.

From Singapore's perspective, the FTA brings trade benefits. Presumably they judged that those outweighted the negatives.

[guard-of-terra]

Okay, why then enforce those laws? You can pass them but never enforce. It's your country, who can tell you what to judge for.