You are not constructive when you only want to strap gov. powers. The resulting void is ripe for the private sector to capture. To counter this, you need capable public institutions, so a constructive approach would mean, more precise regulations with balanced liberties and bureaucratic aid, not plain less of it. (IMO, this general rejection without a propper problem description nor solution is a product of corporate propaganda to achieve this exact void.)
Its worth noting that I'm specifically talking about federal powers in the US here. I have a lower bar for state and local governments. The whole point of that system is to allow states to try different approaches and policies, if enough states agree on similar approaches maybe it can be pulled up to the federal level.
In the case of the Trump administration, this thread didn't have specific policies people took issue with but I'd say most likely candidates roll back to issues that I wouldn't want to see the federal government responsible for. Immigration is probably an outlier, though that's a whole can of worms and I disagree with most immigration restrictions in part because of the interplay between immigration and entitlement programs.