Comments made by Scheer in 2005 are proving embarrassing for the Conservative leader after it was revealed he is a dual American-Canadian citizen.

In a blog post in 2005 Scheer, asked if his constituents about the citizenship of then-Governor General Michaëlle Jean who held a French passport. Scheer asked “Does it bother you that she is a dual citizen (France and Canada)? Would it bother you if instead of French citizenship, she held U.S. citizenship?”

On Thursday Scheer claimed he wasn’t attacking Jean, merely asking his constituents their opinion.

Scheer’s father is American and his mother is Canadian. Scheer and his sisters received American passports as children. His spokesperson says he’s never voted in American elections.

This isn’t the first time Conservatives have questioned the loyalty of dual citizens.

As leader of the Liberal Party, Stephan Dion faced accusations of dual loyalty from Harper and the Conservatives for holding a French passport. Similar accusations were levelled at NDP leader Thomas Mulcair.

Harper also made Michael Ignatieff’s time away from Canada a focal point of the campaign with the famous line “he’s just visiting”.

Social media users also questionned the timing of Scheer’s plan to renounce his citizenship. Lawyer Amir Attaran pointed out it can take up to a year to renounce American citizenship, but Seheer only began the process in August.