Green Party TD Neasa Hourigan has spoken out in support of her colleague TD Patrick Costello who has begun a private legal action against the Government's proposals to ratify the EU-Canada trade agreement called CETA.
Speaking on the RTÉ News Your Politics podcast, she said it was "no secret" that she had reservations about the deal.
The legal action has been criticised by Tánaiste Leo Varadkar and is seen by some in Government as undermining Fianna Fáil, Fine Gael and Green coalition.
Ms Hourigan said: "The question is ... if you are in any position of power and you are being asked to do something which you expect might be not legal you need to speak up."
She added there was a question of whether Ireland was handing over sovereignty if it agreed to the deal and added: "Really the only way to settle this is to ask a court."
The TD admitted "it has not been plain sailing" in the parliamentary party and added there had been a "huge amount of turmoil".
But she stressed she was "very comfortable in the Greens".
We need your consent to load this SoundCloud contentWe use SoundCloud to manage extra content that can set cookies on your device and collect data about your activity. Please review their details and accept them to load the content.Manage Preferences
Ms Hourigan was elected to the Dáil just before the pandemic broke out in Ireland.
She said she was a Covid politician and was looking forward to returning to Leinster House when restrictions lift.