President Donald Trump suggested creating a branch of the military for space during an appearance in San Diego, California, on Tuesday. He says while at the Miramar Air Station, "My new national strategy for space recognizes that space is a war-fighting domain just like the land, air and sea. We may even have a Space Force." While Trump appears to have wandered into the issue in his Tuesday speech, the idea is not new. It was proposed by the Congressional Strategic Forces Subcommittee last July.