An American woman with a 12-year-old conviction for driving under the influence of drugs causing death was turned back at the Canadian border last week.

The woman was one of at least six travellers rejected by border guards in recent days.

In the Sept. 15 incident, the U.S. resident had asked for permission to enter Canada, and produced a criminal record for all the states she had lived in.

According to the Canada Border Services Agency, the record also showed convictions for battery and disorderly conduct.

As driving under the influence causing death can bring a life sentence if committed in Canada, the woman was denied entry.

On Sept. 11, a man was turned away at the border after he told officers he wanted to enter Canada because he felt the U.S. government and a cartel were after him.

The man believed other travellers being processed at the same time were actually government agents listening to him, said CBSA officials. As a result, he preferred to draw diagrams rather than answer questions, they said.

Officers determined the man had been unemployed for the past year, collects disability and has no demonstrable ties to the U.S. He was returned to the states without incident.

A woman and her three children were turned back on Sept. 10 after border guards suspected the woman was planning to remove her children – aged 15,14 and 12 years – from the U.S. against their father's wishes and an Illinois court order.

During an interview, the woman was co-operative and the children did not appeared in distress, CBSA officials said.

However, the woman could not produce documents that clearly showed the custody arrangement for the children, or that she had permission from their father to travel out of the country.

As well, several explanations appeared to conflict with information obtained from Illinois police.

Further questioning determined the woman had no ties to the U.S., was enrolled at the University of B.C. and had a mailbox address in Vancouver.

Four other travellers caught border guards' attention on Sept. 13.

Two Canadians returning from Bellingham were turned over to the RCMP after the driver failed a breathalyzer test.

And, complaints that a couple of passengers waiting in the same lineup were having a dispute led guards to two travellers who accused each other of assault and uttering threats.

White Rock RCMP attended and the pair eventually left without incident.