There's no GOOD reason why an American-developed vaccine could not be on the market much sooner. This would require a decision to move to human trial more rapidly than usual, and to shorten the times of such trials. Example: University of Pittsburgh has in hand an experimental vaccine that has shown efficacy in animal trials. So, let's find out if it's safe in humans - how long need that take? Is it toxic? Short-term trial. Is it mutagenic? Again, mass-dose tests in animals don't take very long - and long-term human issues can't be determined in trials anyway. Then, is it efficacious? It seems to me that once safety is determined, you can inoculate people, and measure efficacy over time - for instance, inoculate health-care workers (if you know it's safe), but maintain current protective measures - if infection rates go down or go to zero, you have a winner - quickly.
PC - I would agree that we need to find ways to return to some normalcy - but with a large caveat: Most large gatherings (thousands of people in one place) are, more or less, for entertainment purposes. I would argue that large public entertainments should be the last things we worry about getting back online. This would be concerts, sporting events, movie theaters, etc. We all used to get by just fine without attending these things - and I'm not talking about centuries ago, but about in my own lifetime, growing up in rural PA a long way from the mass venues.
We can get people back to work (in most kinds of business) with what I would characterize as acceptable risk - but we don't need to have large groups of people gathering in close quarters just to be entertained or amused. We just don't.
Religious gatherings will present a special challenge, because for many people, actually being there and participating is important, is fundamental to their beliefs. It would be harder to keep the churches closed for an extended period than to shut down arenas, theaters, etc.
The issue with Trump is not that everything he suggests is necessarily wrong. It's that he generally doesn't know what he's talking about - so some comments may be OK, but a lot are very wrong. Hydroxychloroquine, for example - his promoting this is causing shortages that will kill Lupus sufferers, but he just will not shut up. He doesn't give a damn about the impact on Lupus patients - or he doesn't comprehend, which in a President is as bad (or worse). With Trump, the issue is also the reality that we had to go through several weeks when he was (or to a large degree, may still be) in denial about the nature of the problem here, and his inability to think long-term about much of anything. He's been characterized as a toddler, and to a significant extent, he seems to function at that level. It's all about him, it's all about now. As a result, necessary measures are delayed, are half-hearted when finally agreed to... and silly side trips to satisfy irrational whims are mixed in.
But yes, over time we need to strike a balance between risk reduction and "everything else." Personally, I come down on the side of keeping a range of completely non-essential entertainment businesses shut down. Arenas, theaters, amusement parks, casinos (gasp!), etc. We can do without mass entertainments for a while; people might even remember how to read! 
And, to return to where I started, bend the FDA rules for testing/approving vaccines. Federally indemnify producers and those who administer such vaccines, if necessary. Apply the Shakespearean solution to ambulance-chasing lawyers who might attempt to profit should a vaccine prove (in the long run) to be less than hoped. But get moving. Or else resign ourselves to the fact that the vaccines that we end up using will be Chinese intellectual property.
