> What is Trump doing that isn’t lawful or constitutional?
Quite a lot of things. Many of them that might be Constitutional for the government but are illegal and unconstitutional for Trump because they would require Congressional action to make or change law to be valid, and that hasn't happened. That applies to, for instance, most of the spending cuts that are not done through the budget process and the mass firings.
> And why aren’t there any repercussions (as far as I know) for that?
There have been legal reversals, but court processes are slow. There aren't other consequence, because most other consequences for malfeasance by the Chief Executive require active Congressional action, and while Congress has not actively done what is necessary to make actions legal, it also hasn't been interested in taking corrective action against Trump, largely because the majority tacitly supports the illegal actions (both in their substance and the decision to do them by unlawful means.)
Quite a lot of things. Many of them that might be Constitutional for the government but are illegal and unconstitutional for Trump because they would require Congressional action to make or change law to be valid, and that hasn't happened. That applies to, for instance, most of the spending cuts that are not done through the budget process and the mass firings.
> And why aren’t there any repercussions (as far as I know) for that?
There have been legal reversals, but court processes are slow. There aren't other consequence, because most other consequences for malfeasance by the Chief Executive require active Congressional action, and while Congress has not actively done what is necessary to make actions legal, it also hasn't been interested in taking corrective action against Trump, largely because the majority tacitly supports the illegal actions (both in their substance and the decision to do them by unlawful means.)