When Christopher Landry was making his annual trip to New Brunswick from New Hampshire, he didn't think he would run into any problems.

But on his way home crossing the border to the U.S. in Houlton, Maine, he found out he wasn't allowed back.

"My family depends on me for food, shelter, clothing, everything." he said. "So I'm missing that. It's my entire life I'm missing." 

He said border officers told him, because of convictions in 2004 and 2007 for possession of marijuana and driving with a susp…