That why you look at their actions and understand what a president is actually supposed to do rather than the bullshit they spoon feed you for generations.
Almost the only responsibility of the federal government is the national security of the citizens and to uphold the Constitution.
The federal government gets its power from the states. People often get state and federal authority fucked up and ignorantly default all power to federal.
Sorry for the overview but it's best to look at what policies they are utilizing for the people. Watch to see if they are doing something unconstitutional or attempting to impose power on the states.
Only one president in my lifetime upheld the constitution, secured the citizens (best), and did not impose power on the states (hemp and abortion was given back).
Choose wisely.