Saul, people flying to Alaska prior to statehood, right? the constitution, under the Privileges and immunities clause implies the freedom of travel. which this power lies in the states where they can not prevent you from traveling with a tax or whatever to enter or leave that state. the federal governments power within this clause is to ensure that the states don't impeded this right. as a territory, Alaska was not a state and did not enjoy those rights like we supposedly do now. 

my "southern borders" statement was in reference to the US-Mexico border not Alaska's southern border. the people who illegally enter from down there have the ability to purchase documents from the cartels that will pass the federal background checks provided in the e-verify system. they also provide training on how to manipulate the welfare programs offered in the US. its truly a problem and needs to get corrected.