Customs Commissioner John Philip Sevilla admitted at a Senate hearing on Wednesday the existence of "tara" system or grease money in the agency but said his office could not change it overnight. Video by INQUIRER.net's Ryan Leagogo<br /><br /><br />Visit us at http://www.inquirer.net<br />Facebook: http://facebook.com/inquirerdotnet<br />Twitter: http://twitter.com/inquirerdotnet<br />Story: http://newsinfo.inquirer.net/567621/bribery-in-customs-is-deeply-rooted-admits-chief