The Taoiseach said the British government had freely entered into the treaty.
The Taoiseach has condemned the British government for what he called its “bad faith efforts” to undermine a Treaty freely entered into.
Speaking in the European Parliament in Strasbourg a short time ago, Micheál Martin said the European Union has worked hard to find ways to minimise the negative impacts of Brexit on businesses and citizens of Northern Ireland.
But he said, efforts to block agreements or introduce new problems have been seen instead of creating a constructive atmosphere for all to engage in.
He told MEPs there are solutions to practical problems under the Protocol if there is the political will to find them.
However he said, that would require the UK government to engage with good faith, seriousness and commitment.
The British Government has been accused of "diplomatic vandalism" by a Fianna Fail MEP.
Boris Johnson's cabinet are set to propose new legislation that will allow future minister to override the Northern Ireland Protocol.
If it's passed, it would overturn many of parts of the agreement, including allowing goods to enter the North from Britain without checks.
Fianna Fail MEP Barry Andrews doesn't expect the legislation to get the green light:
Speaking in the European Parliament, Michael Martin said these proposed changes to the Protocol would be an 'historic low point' in relations:

Investigation Underway After Four Masked Men Broke Into A Monasterevin Home Last Night At Around 7.20pm
Clondalkin Attack Upgraded To Attempted Murder As Commissioner Says It’s Not Linked To Leixlip Case
Man Arrested After Overnight Burglary Spree And Criminal Damage In Naas
Homelessness Figures Hit New Record High Of 16,766 With Increases In Kildare
Family Of Shane O’Farrell - Killed In Hit-And-Run - Welcome Findings Of Bail Report
Milltown Father Shares Details Of Call With Junior Minister For Special Education
Irish Life Health Insurer Announces Price Increases
Animal Rights Assocation Condems Brutal Death Of Stag