Rich Lowry: Trump’s unifying nationalism

Donald Trump gave a notably unifying State of the Union address that didn’t back down an inch from his controversial nationalism.This doesn’t represent a contradiction, but a step toward fulfilling the political promise of his nationalism, which could appeal much more broadly than to Trump’s devoted base.A true American nationalism should be grounded in our common citizenship, champion popular sovereignty and exult in our history, culture and ideals. It should the enemy of iden