As President Donald Trump hikes the fee for a popular skilled worker visa programme in the US, lawyers and business experts are urging Canada to seize the moment and open its doors.

But some caution that those looking north as an alternative may find that Canada's immigration system has its own challenges.

The call to attract and retain talented workers left behind by the Trump administration's changes to H-1B visa is one that Canadian Prime Minister Mark Carney appears to be paying attention to.

In a Monday speech before the Council of Foreign Relations in New York City, he highlighted Canada's homegrown research and AI talent, before noting that "unfortunately, most of them go the US".

"I understand you're changing your visa policy," he added. "Maybe we can hang on to one or two of them."