President Trump's ambitious plan to shield the U.S. from modern missile threats -- a layered homeland defense system against ballistic, hypersonic and advanced cruise missiles dubbed Golden Dome -- may be technically possible to build but the price tag will depend on choices that could run into the trillions. A new analysis from the American Enterprise Institute warns the administration’s stated goals far exceed the $175 billion price the president has cited. At full scope, Golden Dome could cost $4.4...
