As Mainers, if you are vaccinated, you can cross the border from Maine into Canada. Unfortunately, for Canadians, the reverse is not true. Not yet anyway.

Canada opened the border with the U.S. last month, and now Senator Angus King is hoping to change that. In a report by Mainebiz.com, this week the U.S. Senator made a plea to President Biden to open the U.S. side of the border to allow the traffic from Canada to flow once again for vaccinated individuals.

Why just the issue with road travel from Canada to the U.S.? Canadians can already fly into the U.S. but not drive in. For people that live and work along the border this has been a huge issue.

What use to be a simple trip across the border now can cause Canadians to fly to larger hubs like Boston, then rent a car and drive up to Maine. What use to take minutes, can now eat up the better part of an entire day.

No word as of yet from the Biden administration on if they will even consider the measure but there is hope by many, businesses, families, and tourist alike that this request from Maine's U.S. Senator will prompt action soon.

LOOK: Stunning vintage photos capture the beauty of America's national parks

Today these parks are located throughout the country in 25 states and the U.S. Virgin Islands. The land encompassing them was either purchased or donated, though much of it had been inhabited by native people for thousands of years before the founding of the United States. These areas are protected and revered as educational resources about the natural world, and as spaces for exploration.

Keep scrolling for 50 vintage photos that show the beauty of America's national parks.

LOOK: What are the odds that these 50 totally random events will happen to you?

Stacker took the guesswork out of 50 random events to determine just how likely they are to actually happen. They sourced their information from government statistics, scientific articles, and other primary documents. Keep reading to find out why expectant parents shouldn't count on due dates -- and why you should be more worried about dying on your birthday than living to 100 years old.

RANKED: Here are the most popular national parks

To determine the most popular national parks in the United States, Stacker compiled data from the National Park Service on the number of recreational visits each site had in 2020. Keep reading to discover the 50 most popular national parks in the United States, in reverse order from #50 to #1. And be sure to check with individuals parks before you visit to find out about ongoing, pandemic-related safety precautions at www.nps.gov/coronavirus.

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