On the Schedule A Background / Declaration form there is a section for "Personal History". I'm confused on how specific I need to be here. I'm currently living in Canada and have been since May 2013. However, I've taken some day-trips or even a week long trip to the United States to visit my family. Do I need to mention every single time I went across the border to Burlington for some shopping / lunch? How specific does this section need to be, and what are they looking for here?