Keddy was chair of The Standing Committee on Fisheries, and later long time Parliamentary Secretary for International Trade, Atlantic Canada Opportunities, and then National Revenue and Agriculture.

As a member of Stephen Harper's caucus, he served as the Chairman of the Commons Standing Committee on Fisheries and Oceans.

In 2006, he sponsored in the House of Commons a bill which had emerged from the Senate, the Heritage Lighthouse Protection Act, until Parliament was prorogued in 2007.

[3] The use of the partisan cheque was found to be "inappropriate" but not "illegal" by the Ethics Commissioner [4] On November 23, 2009, Keddy sparked a controversy when he was discussing the use of immigrant labour in the industry when he remarked that "Nova Scotians won’t do it — all those no-good bastards sitting on the sidewalk in Halifax that can’t get work."

Keddy apologized for the remark the following day, saying, "In no way did I mean to offend those who have lost their job due to the global recession, nor did I mean to suggest that anyone who is unemployed is not actively looking for employment.