Welcome to the new world of border security. Unsuspecting Americans are turning up at the Canadian border expecting clear sailing, only to find that their past -- sometimes their distant past -- is suddenly an issue. There was a time not long ago when a trip across the border from the United States to Canada was accomplished with a wink and a wave of a driver's license. Those days are over. Take the case of 55-year-old Lake Tahoe resident Greg Felsch. Stopped at the border in Vancouver this month at the start of a planned five-day ski trip, he was sent back to the United States because of a DUI conviction seven years ago. Not that he had any idea what was going on when he was told at customs: Your next stop is immigration." Felsch was ushered into a room. "There must have been 75 people in line," he says. "We were there for three hours. One woman was in tears. A guy was sent back for having a medical marijuana card. I felt like a felon with an ankle bracelet." Or ask the well-to-do East Bay couple who flew to British Columbia this month for an eight-day ski vacation at the famed Whistler Chateau, where rooms run to $500 a night. They'd made the trip many times, but were surprised at the border to be told that the husband would have to report to "secondary" immigration. There, in a room he estimates was filled with 60 other concerned travelers, he was told he was "a person who was inadmissible to Canada." The problem? A conviction for marijuana possession ... in 1975. This is just the beginning. Soon other nations will be able to look into your past when you want to travel there.

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