This is CNBC's Morning Squawk newsletter. Subscribe here to receive future editions in your inbox. Happy Thursday. I'm back after a long weekend in California and at the Coachella Valley Music & Arts Festival, where I saw music tourism play out first-hand. Stock futures are slightly higher this morning. The three major indexes are coming off a mixed day . Here are five key things investors need to know to start the trading day: Everyone from politicians to business leaders are trying to assess