Less than two weeks after weed was legalized in Canada, it's already been reported that Canadians have been denied from entering the United States because of admitted cannabis use. Canadians that have smoked weed previously have been worried about getting banned from the United States after legalization. 

Roy Ludwig, the mayor of Estevan, Saskatchewan is speaking up after he says that multiple Canadian residents have been turned away from the U.S. border on the premise of previous pot use. The Canadian town is situated close to the border crossing of North Dakota, where marijuana use is still illegal.

"It is a fairly serious concern," Ludwig told CBC News. "Even people that might have smoked it 20, 30 years ago, they're being asked, 'Have you ever smoked cannabis?' when they get to the U.S. border. We understand some people have said yes, that they have, and have been turned back".

Some residents have resorted to lying about weed use when questioned about it at the border. "Some are saying the truth, saying yes, they have smoked it," said Ludwig. "And then some that have smoked are saying no because they're scared that they may be banned for life".

The mayor says he already knows of two people that were denied entry into the United States. 

Consumption of cannabis is legal in some states, but not federally. According to Global News, U.S. border officials are able to look at your credit card transactions, which means they would be able to see if you had purchased cannabis recently.