You are right. Another word for his advisers is his cabinet
Yes it is possible though it hasn’t happened it is possible the most a person can be president is 10 years.
Hope it helps
The DREAM Act would permit certain immigrant students who have grown up in the U.S. to apply for temporary legal status and to eventually obtain permanent legal status and become eligible for U.S. citizenship if they go to college or serve in the U.S. military
Disproportional misconduct