Which legislator has the YouTube channel 'RoskamIL06?' Write the official full name.
YouTube channel 'RoskamIL06' refers to youtube = 'RoskamIL06';
SELECT T1.official_full_name FROM current AS T1 INNER JOIN `social-media` AS T2 ON T2.bioguide = T1.bioguide_id WHERE T2.youtube = 'RoskamIL06'