Clwyd South MP Susan Elan Jones has signed a letter to Commissioner for Public Appointments calling on him to explain how controversial appointee Toby Young was put on the board of the Office for Students.
The letter to Peter Riddell has been now signed by more than 60 opposition MPs.
Ms Jones (pictured) said: "People who hold public appointments need to be of the highest calibre and should also uphold decent ethical standards.
"However, five minutes spent searching on Google would have linked Toby Young to some really offensive comments against a whole range of people. It was only because so many people complained that he had to stand down.
"Most people in our area would have lost their jobs for saying far less than Toby Young did and I and other MPs want to know how he was even considered to be a board member of the Office for Students in the first place.
"I welcome the fact that on hearing of our the letter, the Commissioner has said he is looking into the appointment of Toby Young.
"However, it's vital we also get a thorough review into the whole process of all the appointments to the board of the Office for Students."