Former Attorney General Geoffrey Cox said he would oppose the government’s attempts when the Brexit withdrawal agreement is released to the Commons.
He accused Boris Johnson of doing “unconscionable” damage to Britain’s international reputation.
The internal market bill violates a contract signed by the UK and the European Union earlier this year.
Attorney General Robert Buckland It was “insurance policy”.
Buckland told the BBC that he would never need the power the ministers pursued and would resign if the UK violated international law “in a way I couldn’t accept.”
Cox supported Brexit and was the government’s chief legal counsel when the withdrawal agreement was drawn up.
Writing of the times, Cox said there is “no doubt” that the “unpleasant” implications of the withdrawal agreement were known when the Prime Minister signed it.
“Our British Government and Congress have spoken our words. Our honor, trust, pride, and our future influence in the world are all up to us to hold them,” Cox wrote.
He said there are legitimate ways for the government to deal with concerns, such as using a procedure agreed to take “temporary and proportionate measures” to protect the interests of the UK if the UK government is approved by the Commons.
“What the ministers shouldn’t do, even if they are motivated or frustrated, is to take or use the powers permanently and unilaterally to rewrite some of the agreements that the country had freely concluded just a few months ago.”
The UK insisted that there should be no new checks for goods moving from Northern Ireland to the UK when leaving the EU’s single market and customs alliance on January 1.
The Northern Ireland Protocol, a key part of the withdrawal agreement signed by both sides last year, was designed to prevent the return of a difficult border to the island of Ireland.
The Internal Markets Act would give ministers the power to reduce the amount of paperwork required by Northern Ireland companies for goods destined for the UK, such as export and departure declarations, or to completely eliminate the need.
In addition, the UK may modify or reinterpret the “State Assistance” rules for subsidies to businesses in Northern Ireland if both sides disagree on future trade deals.
It is controversial as the UK will change the provisions of the Northern Ireland Protocol, an important part of the legally binding withdrawal agreement agreed upon by the two sides prior to withdrawing from the EU on January 31st.
The government’s intentions provoked widespread criticism, as former Prime Minister Tony Blair and Sir John Major Johnson criticized Britain for “baffled”.
Former leaders took office during a key period of the Northern Ireland peace process.
The two urged lawmakers to refuse to “shame” attempts to ignore part of the agreement. Write in the Sunday Times The government’s actions are “irresponsible, wrong in principle, and dangerous in practice”.
The EU has warned that if the UK does not abandon the controversial elements of its internal market legislation by the end of the month, it could take legal action.