I've never had an enforcement action taken against me, but the immigration-related questions (not the duty ones - I just declare what I brought and would be happy to pay any duty if asked to, and I've never been asked to even when I've been over the limit).

The longest conversation I've ever had with a CBSA agent was when the whole family was coming back, and the lady just gave us a quick reminder to have a letter if one of us travels alone with the kids.

But I still hate the process of re-entering my country. I just find it offensive that you want to know why I was away. I was away because I felt like it. I'm returning because it's my right.

If you want to see if I need to pay duty, just ask me what I bought. I'll tell you if I'm over. If you don't believe me, search my dirty underwear and dusty second-hand books I bought in London to your heart's content.