Can you explain this a little more? Why does having a trade deficit make your currency more valuable? My naive assumption is it would put more dollars in other countries, so they don't need them as much, making dollars less valuable.
Having a huge trade deficit is another way of saying you've sent a lot of your currency to other countries and haven't received it back yet.
I'm sure you can see how those are the same thing.
Almost nobody is spending resources in the US. And that's half of the problem. It's spent elsewhere, therefore labor stagnates or falls, only leaving low tier jobs to work. No factories locks out advancement reducing morale and draining the best that could have their kids advance.
In the US, you had skyrocketing prices on basics like healthcare and housing too, way more than elsewhere. UK has a lot of this problem too.
That together ultimately causes a reduction in teaching and educational standard, which further shrinks the high end advantage.
Short version: economy and people hollowed out in the middle is unsustainable.
And you can't make work sustainable and level the playing field when you have free trade with developing countries.
People cite Ricardo like gospel, but the math of free trade treats every safety net, worker safety protection, etc., as a loss of "comparative advantage." You know how Texas takes jobs from California by having lower standards, lower wages, etc.? That's what happens when you have free trade with third world countries. It's a race to the bottom.
There does seem to be some sort of cycle in play: first a slave-driver-type economy creates a whole lot of wealth, then people get human rights, then they stop being driven like slaves and coast off the accumulated power, but forget the basic principles of wealth creation in the process (see also "good times create weak men" etc) and just spend all their resources arguing about who gets the wealth that is there instead of creating more. And I'm not saying that in an individualist framework - the reason individuals can't do it is a problem with the whole society, not with those individuals.