Prime Minister Justin Trudeau is back in Ottawa today, but with him yet to signal he's ready to address the snowballing resignation calls, the Liberal caucus' regional chairs have called a meeting today to discuss next steps.

Prime Minister Justin Trudeau took part in a virtual meeting of the Canada-U.S. relations cabinet committee on Friday, as people inside and outside the Liberal caucus call for him to resign as leader.

A special meeting of the national Liberal caucus has been called for Wednesday, as pressure mounts on Prime Minister Justin Trudeau to say whether he plans to step down. National Liberal caucus chair Brenda Shanahan notified MPs of the special meeting late Friday.