For once, I would expect at least reciprocity. If the US suspends its visa free programme with Shenghen area countries (assuming ESTA isn't a visa, which it really is), I'd expect US travellers to cease to have visa-free access to Schenghen too.
And they are applying it to everyone, not just US citizens.
In Bruxelles, this will be discussed and qhile they arent elected directly, they cannot pass any crap whatsoever there, there is always oposition on everything there.