Trump tweets China "moving troops" to Hong Kong border after protesters shut down airport, clash with riot police; Trump backs down in trade war, delays tariffs on smartphones, laptops, toys imported from China; Trump praises new regulations limiting legal immigration; Trump continues feud with Scaramucci: "Not a fan"; Trump uses official speech to tout case for re-election; Source: Ivanka Trump calling lawmakers on gun reforms; Democratic leaders demand action on guns as Trump claims republican support for background checks; Democrats scramble to qualify for upcoming debate; Sanders dials back criticism of Washington Post; Feds make changes at jail where Epstein died; Warden at jail where Epstein died temporarily reassigned, two staffers placed on leave; Apparent missile explosion shines new light on Russia's highly secretive nuclear program via Knit