President Trump has a warm and elaborate welcome planned for Saudi Crown Prince Mohammed bin Salman, known as MBS, at the White House Tuesday, signaling his administration's close ties to the Saudi kingdom as the president aims to lock in major business and national security deals.  Ahead of bin Salman's arrival, the president told reporters Monday that the U.S. would sell F-35 fighter jets to the Saudis. The White House has prepared an arrival ceremony laden with fanfare for the crown prince,