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I trust he will be prudent and do what he needs to do to maintain security (job number 1 for a US President).
Presidential Oath of Office:
I do solemnly swear (or affirm) that I will faithfully execute the office of President of the United States, and will to the best of my ability, preserve, protect, and defend the Constitution of the United States.
From the Constitution:
[edit] Section 3: Presidential responsibilities
He shall from time to time give to the Congress Information of the State of the Union, and recommend to their Consideration such Measures as he shall judge necessary and expedient;
he may, on extraordinary Occasions, convene both Houses, or either of them, and in Case of Disagreement between them, with Respect to the Time of Adjournment, he may adjourn them to such Time as he shall think proper;
he shall receive Ambassadors and other public Ministers;
he shall take Care that the Laws be faithfully executed, and
shall Commission all the Officers of the United States.