Sceptical internet sleuths investigated, concluding that the poor-quality footage simply highlighted Mr Trudeau's naturally thick and patchy eyebrows. Take the WND Poll!
Former Conservative cabinet minister Jason Kenney, now the leader of the United Conservative Party in Alberta, also expressed solidarity with Trudeau.
But Trump had already said he would not hesitate to shut countries out of the U.S. market if they retaliate against his tariffs.
The situation only got messier from there, particularly in the leadup to, during and right after the G7 leaders' summit.
Trudeau, who had said at the news conference that Canada would retaliate for new USA tariffs, didn't respond to questions about Trump when the prime minister arrived at a Quebec City hotel Sunday for meetings with other world leaders.
US President Donald Trump issued a volley of tweets on Monday venting anger on some of Washington's closest North Atlantic Treaty Organisation allies over the United State's trade deficit, following a divisive G7 meeting in Canada. Trudeau told reporters that the statement was supported by every member, but Trump's Twitter message Saturday withdrew us support for the communique. A Madawaska, Maine, mill pumps pulp from the Canadian side of the border to be made into paper on the United States side. "He did a whole disservice to the whole G-7".
White House economic adviser Larry Kudlow and trade adviser Peter Navarro drove the message home in an extraordinary assault on a close United States ally and neighbour.
When Mr Trump's tweets withdrawing support from the G7 statement hit on Sunday, the Prime Minister's office said Mr Trudeau had not said anything in his closing news conference he has not said to the US President before.
But before the group could sign off on a joint statement of agreement on trade talks, Trump's advisers reportedly insisted that the USA would not agree to two key points in the statement related to the environment.
Tusk's comments came shortly after President Trump's trade adviser Peter Navarro said there was a "special place in hell" for leaders who betrayed Trump. "The worst", Trump said when he got his reply, going on to give a fairly length answer nonetheless.
"Don't tell Twitter; tell Trump", said another.
"He did him a favor", Navarro said.
President Donald Trump lashed out at USA allies Monday in a Twitter rant focusing on trade following a contentious G7 summit of economic powers in Canada at the weekend.
The verbal volleys by Navarro and Trump's top economic adviser, Larry Kudlow, picked up where Trump left off Saturday evening with a series of tweets from Air Force One en route to Singapore for his nuclear summit Tuesday with North Korea's Kim Jong Un.
"They should have said to him, 'God speed, you are negotiating with the insane nuclear tyrant in North Korea, and we are behind you, '" Kudlow said.
Trump administration officials on Sunday accused Canadian Prime Minister Justin Trudeau of stabbing President Trump in the back, blaming him for the president's refusal to endorse a joint statement with other world leaders.
Finnish Prime Minister Juha Sipila said Sunday that the rift between G7 members at the summit reflects the unpredictability in worldwide political arena, and he hoped the aftermath of the summit would be cleared up quickly. But that didn't stop people from making comparisons. Does he wear the makeup in the family? Anything but what he's doing.
"I would hope that he would reflect on what his closest allies are saying..." He has to wear more makeup than his wife.