Earlier quoted context omitted.
Republicans control the House and Senate. And Trump isn't going to veto conservative signature pieces like repealing ObamaCare.
Can someone explain why Americans hate ObamaCare? Here in the UK we have universal healthcare (the NHS) which all employed people pay for via a special tax (called National Insurance ,or NI) - isn't ObamaCare the same thing?
In their attempts to lock in parts of the law so that an incoming shift of government couldn't easily change or repeal it, the Democrats hardcoded idiocies like a fixed date for the launch of the healthcare.gov website and features it had to have while leaving funding and development of the site a bit up in the air.
In a nominally functioning government, the ACA would have been a broad, general law laying out specific goals, requirements and mandates for compliance, delegating implementation and enforcement to a new or existing agency. But in the "regulations are bad, laws are good" environment in DC, processes and requirements which should have been regulations (which can be drawn up and vetted by a bureacracy under legislative supervision) ended up being in the actual law, which can only be changed by Congress and the President working together, which all but stopped after the 2010 midterm elections.
Add in the the Federal government is limited (by design) in what it can mandate individual States can do and you have this mess called Obamacare.
I don't support repealing it, I do support modifying it to make implementation more flexible, but that is almost certainly not going to happen under a Republican government.