A small building in the United States is heavily guarded, when a Mercedes-Benz slowly approached the big iron gate, the second floor of the infrared line has been aimed at the cab man's head, as soon as found wrong, bullets will immediately shoot through the man's head.

The man in windbreaker got out of the car happily, glanced calmly at the man hiding in the dark, and raised his hand to the iron door. After a brief conversation with the man in front of the iron gate, the man was released.

One of the most promising candidates to win the presidency in this year's U.S. election is sitting in a...