A mob waved foreign flags as it tried to block the enforcement of the nation’s popular laws at a pot-growing farm in rural California. The foreign affiliations of the mobs’ flags were spotlighted by Stephen Miller, top aide to President Donald Trump, and by the chief spokesperson at the Department of Homeland Security. The foreign affiliation is important because it helps Trump unlock the deportation powers granted by the 1798 Alien Enemies Act. Trump has cited the Alien Enemies Act in his immigration enforcement, but Democratic-appointed judges are blocking such actions until the U.S. Supreme Court makes a decision. Lower-court...