It was speculated the early death of his son lead to clinical depression as he took steps to make sure he wasn’t drafted for nomination
US government propaganda aimed at conserving food
There were several reasons.
1. If the Europeans brought them to America, they would be familiar with the land, so they would be less likely to escape.
2. The Europeans believe that they were resistant to certain diseases (they weren't)
3. The Europeans know that they couldn't speak English, so they wouldn't be able to communicate
~theLocoCoco