Mike Russell, MSP, was accused of being “incoherent” and making “no sense” as he tried to make the point for Scotland to remain in the single market even though the UK is set to leave.
Nicola Sturgeon has said the UK Government is showing “no sign whatsoever” of taking Scotland’s position “remotely seriously”.
Mr Russell was grilled as to how it was at all possible for Scotland to operate freedom of movement into the EU from Scotland with Theresa May clear on her desire to end free movement.
“So somebody moves freely from the EU into Scotland under your proposed deal – how then do they not move freely into England?”
Mike Russell and Nicola Sturgeon want Scotland to retain freedom of movement
So somebody moves freely from the EU into Scotland under your proposed deal – how then do they not move freely into England?
Sarah Montague to Mike Russell
In reply he said: “Because their passport or their documentation shows that they are only entitled to stay in Scotland.”
“So there will be a border?” Montague exclaimed.
“There won’t be checks along the border but people will not be entitled to stay elsewhere,” Mr Russell said.
The MSP said it would be down to authorities to check on individuals’ paperwork to ensure migrants were not over staying their visas.
During the interview, Mr Russell said No 10 and Scotland had not “got anywhere close” to a joint position between the UK Government and the devolved administrations.
BORDER-FREE Schengen: Countries you can visit WITHOUT a passport Mon, January 23, 2017
If you are an EU national, you do not need to show your national ID card or passport when you are travelling from one border-free Schengen EU country to another. The Schengen Area is an area comprising 26 European states that have officially abolished passport and any other type of border control at their mutual borders.
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"The decisions that are being made are being made without reference to the devolved nations and to that structure,” he said.
He said the "obsession" with immigration was "driving the UK Government into a very dangerous place”.
Under the Scottish Government's plans, the documentation of EU migrants would show they are allowed to live in Scotland.
Listeners turned on the SNP politician, with several using Twitter to criticise his demands.
One said: “I’d like to agree with the SNP Mike Russell on Today but his plans make no sense; neither can he seem to explain them.”
Another tweeted: “Mike Russell on Brexit does not convince with his waffle about free movement and how En/Sc border check can be avoided.”
A third said: “Mike Russell utterly incoherent on the movement of people around the UK. SNP so blinded by petty nationalism they ignore reality.”
Theresa May is set to meet with Nicola Sturgeon on Monday
The SNP are set to fight for the result of last June’s referendum to be scrapped if Parliament fails to support the PM’s Brexit deal.
A ‘reset’ motion is one of 50 amendments the party plans to table ahead of this week’s Article 50 debate in Westminster.
Another amendment will call for the Government not to trigger Article 50 until they promise to seek a “differentiated agreement for Scotland to remain in the European Economic Area”.
Alex Salmond said: “The Prime Minister is intent on fast-tracking this Bill to avoid parliamentary and public scrutiny and to duck the big questions on a hard Tory Brexit.
“She is rushing towards her own cliff edge and taking the rest of the country with her. Her behaviour is a contempt of Parliament and defies logic and reason.
“Her refusal to live up to her own promise, on becoming Prime Minister, to agree a common position with the devolved administration demonstrates an arrogant affront to the people of Scotland.”
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