U.S. extends border closures with Mexico, Canada until at least July 21

June 21 (UPI) -- The U.S. borders with Canada and Mexico will remain closed for at least another month to mitigate COVID-19 transmissions, government officials said.

The Homeland Security Department said on Sunday that the borders to both nations will stay closed to non-essential incoming travel until at least July 21.

"To reduce the spread of COVID-19, the United States is extending restrictions on non-essential travel at our land and ferry crossings with Canada and Mexico through July 21, while ensuring access for essential trade and travel," the department tweeted.

Both borders have been closed to non-essential travel since March 2020. Last month, the department extended the border lockdowns through June 21. Americans, however, have largely been able to travel into northern Mexico.

The department noted that reopening the borders will come once it's determined the coronavirus threat reaches an acceptable level. It cited "positive developments in recent weeks" and said the department is working with federal agencies to "identify the conditions under which restrictions may be eased safely and sustainably."

Last week, the Canadian government said it also would keep the U.S.-Canada border closed for at least another month.

"Our number one priority ... is keeping Canadians safe," Canadian public safety minister Bill Blair said on Friday. "In coordination with the U.S., we are extending restrictions on non-essential international travel and with the United States until July 21."

Canadian Prime Minister Justin Trudeau has said Canada's border will be closed until at least 75% of Canadians receive at least the first COVID-19 vaccine dose.