I never said Holden was based in the US. I said it was a division of GM. General Motors owns Holden and GM being an American corporation. Although, Holden may be outta here in the near future.
For trucks, the Honda Ridgeline and Toyota Tundra are tops in most American. I had a Ford Ranger that was made in Mexico, and I had a Nissan Titan that was made in the US.
Personally, I'd rather buy a car that was built in the US with American labor than buy a car built by Canadians or Mexicans. I want my money to go to the worker more than I care about supporting an over paid executive.
In the end, spend your money however you want to. You earned it, and this is the land of the free, for now (insert political dig here).