Trump Golden Dome | What is Trump’s $ 175 BN Missile Shield Golden Dome? , US Iron Dome United States President Donald Trump on Tuesday unveiled new details on his plan for missile defense system known as “Golden Dome”, which costs $ 175 billion. The President said that “Golden Dome” would be the first weapon that the US puts into space, and it should be turned on in about three years, by the end of its time in the office, the President said. See to learn more about it.