It is not fair to blame him for all the deaths, but he can be blamed for a bad response.
You are correct about one thing, there was never any chance of keeping it out of the country, we are too mobile for that. The focus should have been from the start on slowing the spread of it in the country.
In late March Trump got companies to start mass producing more PPE gear, this should have been done in late Jan.
In March Trump got testing kits starting to be mass produced, this should have been done in late Jan.
We never have gotten a contact tracing program in place, and perhaps we are too big and spread out for that.
And finally, in April they started to be honest with us about how bad it could be, this also should have been done in late Jan.