What is The main purpose of the White House Office..?

Explanation:

the Oval Office may have symbolized his view of the modern-day president. Taft intended to be the center of his administration, and by creating the Oval Office in the center of the West Wing, he was more involved with the day-to-day operation of his presidency than were his recent predecessors

Hope it helps

i think its provide for the common defense

the correct answer is history and tradition.