I got my Canadian passport last year in November and traveled to US for the first time on it this month. I was sent to secondary inspection where they opened my bags, patted me down and DHS officer asked me the usual questions - where am I going, how long for and my profession. Before this, I also traveled to US regularly as a Canadian PR but was never sent to secondary inspection. Has anyone experienced this before? Is it likely to become a regular occurrence? Should I apply for Nexus to make my travels easier? Any advice is appreciated.