Billy Graham preached at a public revival service in Los Angeles in 1949. They gathered in a "Canvas Cathedral" - a tent constructed for the event. Thousands in attendance. This event cemented his reputation as a national religious leader. Graham also built a friendship with President Eisenhower. Graham preached in front of the Capitol building in 1952 for a large rally. Through this event, the White House recognized a national day of prayer, which is still recognized today. In his speeches, he described many social problems as a symptom of a larger disease - an internal spiritual disease that could only be overcome by individual conversion to Jesus Christ.