Insane work hours. Long stretches of unpaid overtime sometimes without weekends. No autonomy. No freedom. No say. Oh and shift work.
TSMC not being able to find workers has nothing in the US has nothing to do with a shortage of workers. They're just terrible to their people.
So they'll get H1B workers who are then basically trapped and can be mistreated.
The current system is terrible for everyone. Bad for the economy by keeping smart hard working people out. Bad for the workers who make it here who need to put up with TSMC. And bad for local Americans because H1B wage lower bounds aren't high enough.