Since some of the frontier colonies during this time were free due to the idea of popular sovereignty, some slaves could successfully escape to "free" states and not be forced to return to their home state.
The correct answer is <span>legally guaranteed by the Constitution
According to the constitution, if people elect a president he will have powers that are enumerated in the constitution and that are not related to the house or the senate, since those are the legislative branch, or the supreme court since it's the judicial branch. The president is the head of the executive branch so his powers are his own while in accordance with the constitution.</span>
