It's amazing how so many of the America firsters don't practise what they preach (for others).
This is a bad comparison. Germen auto-workers are probably more unionized than the auto-workers here in the U.S. and to compare trade with Germany to China and other third-world labor forces is not realistic.
Buchanan did admit that he was wrong for preaching "buy American" while buying German (For status, I guess) but the damage had been done.