NEW ORLEANS, Louisiana — President Trump promised all necessary federal aid to rebuild hurricane-ravaged sections of Louisiana and Texas during a trip to both states on Saturday, as he toured storm damage and met with first responders. “Our hearts go out to the families who have lost loved ones,” Mr. Trump said at the Lake Charles, Louisiana, Fire Department as he met with local officials. “You were hit hard. I heard it was the most powerful storm coming in and hitting your land in 150 years.” At least 14 people were killed in the Category 4 storm, which made landfall...