Mexican President Andrés Manuel López Obrador confirmed Monday that he won't attend the Summit of the Americas hosted by President Biden in Los Angeles this week because not all countries in the Americas are invited. López Obrador had previously threatened to skip the summit if the Biden administration didn't invite countries like Cuba, Venezuela and Nicaragua. Those countries did not receive invitations over human rights concerns and their "lack of democratic space," a senior U.S. official said Monday. The official said the U.S., as the host of this year's summit, has "wide discretion on invitations, but deeply values and respects...