Fabrice Leggeri, the former head of the EU's border police Frontex, sought to attend a European Parliament committee meeting in mid-July.
But a majority of coordinators sitting on the budgetary control committee, where he wanted to appear, have told him to stay away.
The parliament's budgetary control committee supervises how the EU institutions and its agencies spend money.
In May, the European Parliament refused to sign off on the Enjoy access to all articles and 25 years of archives, comment and gift articles. Become a member for as low as €1,75 per week.To read this story, log in or subscribe