It doesn't matter, even if a Honda is 90% American content, without that 10%, that car won't hit production line.
Making one's main criteria for buying a product to be American made is quite idiotic.
"Patriotic purchasing" is quite a propaganda these days, with the American businesses trying to get a customer.
The kind of cars Americans buy is but just a fraction of the problem of our economy.
America is dependent on foreign economy, as much as others are dependent on us.
Consumers like efficiency and value for money, not to buy a piece of crap that will break down out of some misguided belief that it will keep a countryman his or her job. The truth is most of those jobs have been outsourced or given to robots, which is just another corporation practicing capitalistic rights.
One can't simply, take out foreign market out of the American business infrastructure.
If Real Americans only buy American, then Americans won't have anything in their bank account as savings.
Besides cars, USA labor (w/ our unions) = expensive American-made products
The products will be more expensive than identical foreign products
So, this won't most likely help the American economy at all.