When would be an appropriate time for people to become aware of the problem and start caring? I don't see how the motivation matters. The problem is real even if most people weren't aware of it until now.
But I agree, let's do it now, it really needs to be done as soon as possible, but, it can't depend its continuation and the countries it gets applied to, on whatever political wing is in power there.
The action needs to be global, with clear rules, and applied on every case, no exceptions.
Now is as good a time as any. What doesn't help the discussion is making it about the current administration when this is a problem that spans multiple administrations on both ends of the political spectrum.
It's the same for policies that span the Trump and Obama administrations (and probably the W Bush and Clinton administrations too).