tonight, sort of. ♪ at the twilights last gleaming ♪ ♪ whose broad stripes and bright stars, through the perilous fight ♪ ♪ ♪ for the ramparts we watch." but first the latest on robert mueller's investigation. justice correspondent pamela brown. pamela, good evening to you. what are your sources telling you tonight about an interview between the president and special counsel mueller? >> look, the president trump's lawyers view an interview request for the president from special counsel mueller as invetable. they're preparing for that. they're discussing internally how to define the parameters of any such interview. the matter of an interview was