He is a member of the Chartered Institute of Transport, a Senator of Junior Chamber International and is a former president of the Irish Road Hauliers' Association.
In subsequent terms he served as government spokesperson on Justice, Equality, and Law Reform between 2002 and 2007, and Communications, Energy, and Natural resources from 2007 to 2011.
[3] He is a board member of Parliamentarians for Global Action, a New York-based non-governmental organization dealing with peace, democracy, human rights and the rules of law.
[7] In April 2008, Walsh claimed "that Chairmen of some of the tribunals used their position in order to act more or less as shop stewards for the wealthy legal profession".
On 24 April 2008, Walsh put forward a party motion to counter the proposed same-sex Civil Partnership Bill.
[12] In the 2014 "Pantigate" controversy in which the national broadcaster RTÉ paid a purported €85,000 to conservative commentators, Walsh argued that some proponents of same-sex marriage were "dangerous and vicious".
[15][16][17] On 7 July 2010, he resigned the Fianna Fáil parliamentary party whip, along with Labhrás Ó Murchú and John Hanafin, in protest at the Civil Partnership bill.
[26] T.J. McIntyre, a law lecturer at University College Dublin drew attention to edits made from an IP address belonging to the Oireachtas.