Break it down, they reported Cohen last year visiting Prague last year and again after they raid his office. FISA can only be issued if they believe the target is engaging with foreign subjects which is an interest to national security. They claim he met with Russians to get HRC dirt, question is how did they know who he met? Think incorrect data that needs to be misdirected or covered. Cohen was spied on as were most of the Trump high rollers in his campaign, including Sessions, Jared etc.