Trump’s attacks on Canada’s economy and threats to make it the 51st state have infuriated Canadians, who are canceling trips to the U.S. in big numbers

Authorities say a shooting involving a police officer outside Toronto’s Pearson International Airport cut off traffic heading to Terminal 1

Mark Carney’s political career is only months old, and it’s already been a roller-coaster ride

Olivier Rioux holds the Guinness World Record for world's tallest male teenager.

A bipartisan group of senators passed a resolution to end the national emergency declaration against Canada and cut down President Donald Trump’s tariff authority. ABC News’ Jay O’Brien reports.

Trump made his way back to the White House in no small part because of his promise to better the economy. He's staking a large part of his agenda on broad-based tariffs.

ABC News’ Linsey Davis spoke with Premier of Ontario Doug Ford about President Donald Trump’s tariff announcement. Ford said the United States and Canada "share the same values."

ABC News’ Linsey Davis spoke with Professor Marci Shore, a Yale Professor planning to leave the United States to teach in Canada amid a crackdown on universities by President Trump's administration .

President Donald Trump on Tuesday called on the Senate to keep the United States' tariffs on Canada in place.

President Trump on Tuesday called on the Senate to keep the United States' tariffs on Canada in place -- hours before Democrats could potentially force a vote to block the tariffs on the ally country.

Canadian Chamber of Commerce officials Candace Laing and Andrew DiCapua discuss the impact of the Trump administration’s tariffs on U.S.-Canada trade.

President Donald Trump said the call was “extremely productive.” ABC News’ Karen Travers reports.

Three people were killed when a large avalanche swept away a group of skiers in Canada, officials said.

A battle brewing between two neighbors could up-end the tourism industry in the U.S.

At least 12 people have been injured in a shooting at a pub in Toronto on Friday night, police said.

ABC News’ Linsey Davis spoke with ABC News aviation analyst John Nance on how a crew mistook a taxiway for a runway and the crash report from the fiery Delta landing in Toronto last month.

The right main landing gear collapsed on impact when a Delta flight landed at Toronto's Pearson International Airport last month.

Mark Carney was sworn in Friday as Canada's 24th prime minister, delivering remarks on the new government and trade saying "negativity won't win a trade war."

President Donald Trump continued to belittle Canada and threaten it with joining the United States as the economic war with the country continued.

President Trump reiterates his desire for Canada to become the 51st state amid the ongoing trade battle, saying he’s not “going to bend” on tariffs.

United States trade partners, including the European Union, responded after President Donald Trump’s 25% tariffs on steel and aluminum imports went into effect Wednesday. Trump said he’s "not happy."

Canadians in the U.S. for 30 days or longer will soon have to register their information with the U.S. government, according to a notice obtained by ABC News.

Canadian Chamber of Commerce president Candace Laing says “markets are incredibly frustrated with uncertainty” created by tariffs.

President Donald Trump on Tuesday backed down from a threat to impose an additional 25% in tariffs on Canadian steel and aluminum products.

Canada has entered a new era of leadership, with Liberal Party leader Mark Carney, a banker and investor, elected as Liberal Party leader to succeed Justin Trudeau.

Justin Trudeau, who was first elected prime minister in November 2015, announced on Jan. 6 his intention to resign as Liberal Party leader and prime minister.

Canada’s Liberal Party is electing a replacement for Prime Minister Justin Trudeau on Sunday. Leading contenders are former head banker Mark Carney and former Deputy Prime Minister Chrystia Freeland.

At least 12 people have been injured in a shooting at a pub in Toronto on Friday night, police said.

Ontario Premier Doug Ford said in an interview with ABC News Live that President Trump's tariffs against Canada are the "craziest idea someone could ever come up with."

President Donald Trump's broad tariffs on imported goods from Mexico and Canada took effect on Tuesday.

The stock market tumbled Monday after President Donald Trump said tariffs would go into effect for Mexico, Canada and China as planned on Tuesday.

President Donald Trump is moving ahead with 25% tariffs for Canada and Mexico, plus a newly increased 20% tariff on China. Economists say they will mean higher prices for consumers.

President Donald Trump's assertion that Canada should become the 51st state would likely lead to major Democratic electoral gains.

Canadian Prime Minister Justin Trudeau took a jab at President Trump after Canada's victory over the United States in an international hockey tournament.

Connor McDavid scored an overtime winner to lift Team Canada over Team USA in the inaugural 4 Nations Face Off final, 3-2.

Trump told reporters on Sunday he planned to speak with Canadian Prime Minister Justin Trudeau and Mexican President Claudia Sheinbaum on Monday.

The U.S. has paused for one month the implementation of tariffs on Canada and Mexico following President Donald Trump's conversations with each nation's leaders on Monday.

The U.S. has paused the implementation of tariffs for a month in both Canada and Mexico following conversations on Monday with President Donald Trump, according to each country's leader.

President Trump ordered tariffs on imports from America's biggest trading partners, claiming he's doing it to stop the flow of drugs and undocumented immigrants into the U.S.

The policy risks raising prices for essential products like gas and groceries.

In an interview on ABC News' "This Week," Canadian Ambassador to the U.S. Kirsten Hillman said Canadians are "perplexed" and "disappointed" by President Trump's tariffs.

On “This Week,” ABC News senior White House correspondent Selina Wang reports on the new tariffs announced by President Donald Trump Saturday. 

ABC News Correspondents Selina Wang and Alexis Christoforous provide the latest updates regarding President Donald Trump's increased tax of goods imported from Mexico, Canada and China.

Canadian Prime Minister Justin Trudeau responded to President Donald Trump’s tariffs Saturday evening by announcing the country will implement 25% tariffs on $155 billion of U.S. goods.

Consumers brace for rising prices as President Donald Trump imposes tariffs on Canada, Mexico and China. 

Economist Kimberly Clausing joined ABC News Live to talk about the possible effects for Americans of Trump’s newly imposed tariffs.

The development comes a month after Canada's deputy prime minister, Chrystia Freeland, resigned suddenly from Trudeau's cabinet.

Trudeau announced he intends to resign as Liberal Party leader and prime minister once a new party leader is determined.

The development comes a month after Canada's deputy prime minister, Chrystia Freeland, resigned suddenly from Trudeau's cabinet.

Cameron Dylan McDougall, 28, from Toronto, Canada, faces three counts of battery charges.