Acosta won't resign, defends secret 2008 plea deal which gave Epstein light sentence for sex crimes; Democrats scramble to prepare for Mueller testimony as some caution against expecting too much; Senior official: Trump's first instinct on Acosta was to fight; Attitude was "Screw'em" after calls to resign came in; White House officials say Acosta handled himself well and that Trump remains supportive of him; British ambassador resigns after calling Trump "Incompetent"; Pelosi: Labor secretary Acosta "Should resign (Or) the president should ask him to step down"; Acosta: State prosecutors were willing to let Epstein "Walk"; Acosta won't say if he regrets 2008 plea deal for Epstein; Pelosi appeals for unity amid house democratic infighting; Hurricane watch issued along Louisiana Coast; North Korea may be targeting former U.S. Marine accused of leading raid on one of its embassies via Knit