He believed a government should protect the rights of citizens. He also thought man was inherently selfish; this why government should protect people. With that, he believed in checks and balances was necessary to prevent any group of people becoming more powerful than another.
Because Jefferson was one of the figureheads of an independent america and the fact that he was the second vice president it was an obvious choose for most people. Jefferson being a member of the democratic republican party took the floor from former president who was a Federalist.
Also if this was for e2020 someone will answer with the sample answer
There were several ways in which the US government increased Mexican immigration, but the best option is "congress passed laws saying that all Latinos fleeing dictators are welcome"
Neutrality
Policy of supporting neither side in a war.
Hope this helps
If the Supreme Court Justice does not agree with the majority opinion, than the court can write a concurring opinion.