Who was the last man to reach the moon and why? When will the United States bring a man to the moon again?

Answer: Gene Cernan

Explanation:

But in 1970 future Apollo missions were cancelled. Apollo 17 became the last manned mission to the Moon, for an indefinite amount of time. The main reason for this was money. The cost of getting to the Moon was, ironically, astronomical.

No we will not bring another man to the moon