A Democrat congressman familiar with Asian affairs has urged President Donald Trump's administration to present a coherent U.S. policy toward North Korea, citing conflicting approaches to the country between Trump and his chief diplomat."I think the president and his administration are still grappling to come up with a coherent and comprehensive foreign policy," Rep. Joaquin Castro of Texas said in a recent interview.Castro referred to the White House's immediate dismissal of Secretary of State Rex Tillerson's offer for unconditional talks with North Korea as one example.Tillerson made the …READ FULL ARTICLE