A full inquiry should be held by Paraliament after Stephen Byers, Geoff Hoon and Patricia Hewitt are suspended from parliamentary Labour party. With more than 20 MPs broke rules on declaring hospitality in questions or debates after visiting locations such as the Maldives, Cyprus and Gibraltar.
The MPs - from Labour, the Tories and the Lib Dems - breached parliamentary regulations on more than 400 occasions.
One former standards watchdog says it shows MPs cannot regulate themselves.