Barnaby Joyce has no sympathy for opposition MPs facing pressure to quit over their citizenship because of the way Labor treated him.
The former Nationals leader says he would have sympathised with the MPs if they had resigned when he did.
"We gave the opportunity then, but remember Tony Burke and the Labor party they thought it was great sport, every day," he told Sky News on Wednesday.
"They said that I was not entitled to be there.
"We put it to them they had people on their own side in the same predicament and now that predicament has come to be the fact."
The High Court on Wednesday ruled ACT Labor senator Katy Gallagher was ineligible at the 2016 election because she was still a British citizen, despite her attempts to renounce her citizenship.
That ruling has put pressure on three other Labor MPs and Centre Alliance's Rebekha Sharkie to resign.
"With (Labor's) Josh Wilson, Susan Lamb, and Justine Keay we've got three people who really shouldn't be there for question time today," Mr Joyce said.
Mr Joyce quit his seat of New England after it was revealed he was a New Zealand citizen, before winning a by-election.