Voters in country after country have grown weary of the same experiment: ballooning welfare states, open-border policies, identity-driven governance, and supranational rules that delivered stagnation, insecurity, and a quiet erosion of national sovereignty.French politician and lawyer Marine Le Pen has launched a new candidacy for the French presidency, hoping to ride a global political pendulum as it swings from socialism and leftism back toward the right. "I do think you're seeing all that take place. But populism, focusing on what's best, what's common sense, what's good for the people of your country, what's good for your country, is, I think,...