Potential jobs and increased prosperity in Dumfries and Galloway are being obstructed by the SNP's independence obsession, local MP Alister Jack has warned.
He has accused the nationalist-led Scottish Government of refusing to co-operate in the Union Connectivity Review which was launched by the UK Government at the weekend.
Mr Jack, who is also Scottish Secretary, pointed out that the study was a possible precursor to major capital projects such as upgrading of the A75, A77, rail links and a bridge or tunnel to Northern Ireland.
But he has expressed deep disappointment, although not surprise, that SNP ministers were attempting to block progress with the study.
He said: "I've been informed that the Scottish Government Cabinet Secretary for Transport Michael Matheson has instructed officials from Transport Scotland not to engage with the review.
"This is a slap in the face to my constituents who want to see the UK and Scottish Governments working together to deliver meaningful investment in infrastructure in our region, which has long been neglected by the devolved SNP administration."
Mr Jack pointed out that additional Westminster funding of projects strengthening the UK single market economy in all four nations was particularly good news for Dumfries and Galloway.
It was part of the positive process, he explained, where funding priorities previously decided through the EU in Brussels were now being set closer to home.
Mr Jack added: "The SNP must stop playing politics and recognise that the review can bring significant long-needed improvements in Dumfries and Galloway and benefit all of Scotland."