Write SQL query to solve given problem: Which legislator has the YouTube channel 'RoskamIL06?' Write the official full name.. Keep the solution inside sql tag ```sql [SQL-Query] ```
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'