Washington for starters in late February, and NY when things were getting grim in mid April. Inslee was critical of the downplaying of the threat the virus posed. Closing travel from China was proactive, but without the contact tracing and uneven testing procedures, it wasn't an effective way of clamping down on everyone who was coming back from China. The focus was on foreign nationals, but clearly anyone who had been in the area was a potential carrier; that focus is what generated the backlash from Democrats. I don't think the travel restriction was a bad thing necessarily, but without additional measures, it didn't serve its intended purpose well. I do think restrictions on travel to any areas with growing number of cases would have been prudent, but with stringent screenings of all people entering the US from those regions; including US citizens.
The implementation of testing was also pretty clumsy. While some nations do develop their own tests, not pivoting quickly after the first defective test was sent out cost a lot of time. There's a lot of red tape to getting medications and tests approved (mostly to protect people from bad medicines), this is one case where there could have been more done to expedite. If the case you're referring to is the company who was asked to send hard copies of their test to the FDA, then yes, that's the kind of crappy bureaucracy that requires circumventing in emergency scenarios.
It was given to the current administration when the previous one departed. It was released publicly when the claims that there was no plan was made by McConnell.
Yeah, there are some wins here, but I hope the lesson from this is preparation is key to nipping pandemics in the bud. A cohesive strategy and communication at the executive level that's echoed by local government helps as well. The disparate messaging and ankle biting by the president didn't help matters; neither did his downplaying of the virus early on. I think the president is better served by communicating on the actions being taken to ensure people will be able to get treatment should there be an infection spike resulting from the reopening. Continuing to tell people there's nothing to worry about isn't proving effective since many know the threat is still out there.