Commons row on devolved parliaments’ role in Brexit
But former shadow Scottish secretary, Ian Murray, who is now Scottish Labour’s Westminster spokesman, defended their stance.
The Edinburgh South MP said: “Rather than add anything constructive to the discussions about the most important decision for our country since the Second World War, nationalists are once again playing political games to score cheap points.
“It was Labour that forced the Tory government to produce a plan for Brexit, and we have been clear that we want to see the Scottish Government involved in the negotiations.
“However, Brexit should not be used as a false mandate from nationalists for a second independence referendum.”
Mr Carmichael pointed out he voted against various other nationalist amendments that sought to require consent by the devolved administrations.
But he added: “This one was different and required the UK Government to seek endorsement. This is a lesser requirement which reflects better the constitutional arrangements that we have and would force the two governments to cooperate and to communicate better.”
The Supreme Court is expected to announce its ruling on the Brexit challenge later this month.
It could mean that Theresa May must seek the consent of the devolved parliaments before she can trigger Article 50.