DUP leader Sir Jeffrey Donaldson has said his party will be "formulating further proposals" for the UK government to address remaining concerns over the Windsor Framework deal.
Sir Jeffrey gave no firm timeframe for when they will put forward these proposals, but he said the DUP will "continue to engage with the government over the weeks ahead".
He said the party was still examining a report completed a fortnight ago by a DUP panel set up to assess the new deal on Brexit's Northern Ireland Protocol.
Read more: DUP leader Jeffrey Donaldson responds to Arlene Foster saying Joe Biden 'hates' the UK
The Windsor Framework was brokered by the UK and European Union to reduce trade barriers between Northern Ireland and Great Britain that resulted from the protocol.
But the DUP, which has been blocking Stormont power-sharing in protest against the protocol, has continued to raise concerns about the new arrangements.
Sir Jeffrey told Belfast Live he was "very pleased with the outcome of the consultation" carried out last month by the DUP's panel.
He said: "We had a very strong engagement from across business and the community.
"We're now examining the report that has been prepared by the consultation panel. And we will of course, be formulating further proposals to put to the government."
The Lagan Valley MP said those proposals will be based on the panel's report "and our own assessment of the Windsor framework, and where we continue to have concerns about it".
Asked for a timeframe for when these proposals would be put to the government, Sir Jeffrey responded: "Well, we will continue to engage with the government over the weeks ahead.
"I want to see progress made and I want to see a solution that works for Northern Ireland, a solution that both unionists and nationalists can support."
Sir Jeffrey was speaking after meeting with Joe Biden as the US president gave a keynote speech at Ulster University's Belfast campus.
Earlier, the DUP leader welcomed the president's visit to Northern Ireland but said it had not altered the "political dynamic".
He said: "We believe the government needs to go further in terms of protecting Northern Ireland's place within the United Kingdom and our ability to trade within the UK internal market and that's what needs to happen now to enable us to move towards the restoration of the political institutions, we need the government to deliver what they've said they will do, which is to protect our place in the United Kingdom."
Sir Jeffrey also insisted American presidents are welcome in Northern Ireland after his predecessor Arlene Foster claimed Mr Biden "hates" the UK.
He said: "The United States is our strongest ally, and it's important as unionists that we continue to support that strong relationship between the United Kingdom and the United States."
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