Because it leaves the industry vulnerable in case China decides to start withholding sales to the US. Especially if they invade Taiwan and trigger a chain reaction of treaties that launches into a huge US vs China slugging match. One which China would likely lose painfully to, but would inflict crippling damage to our military. Anything coming out of China will be stopped for as long as the war goes on, and then even longer depending on how much of what I'm China actually got destroyed.
Remember that Friend Computer loves you. Returning that love TO Friend Computer is MANDATORY, and failure to comply will be considered treason and thus grounds for IMMEDIATE TERMINATION. Thank you citizen and have a mandatorily happy day!
I've seen how badly deer can wreck cars, I'd hate the see what a bear does. Probably better than moose, those things are too cars what a can opener is to a Campbell's soup.
But is it more harmful than inhaling all the other garbage in cigarettes? It becomes an issue of damage mitigation because no amount of laws are ever able to stop substance use. They often make the problem worse, too.