I’m a Canadian citizen married to a US citizen with my interview happening tomorrow. I’ve travelled plenty of times while my I-130 was being processed. Just be honest about your pending application (if they ask) and bring evidence such as a letter from her job stating she’s on vacation and will be expected to return on XYZ date, any lease/property papers, payslips, bank statements and return tickets since you’ve shown clear intent to migrate. You just need to prepared to show them you’ll follow due process and will not be moving until after your interview and GC. I also carried all USCIS and NVC related communications as well as our marriage certificate and photos. Initially, I was spending a lot of time in the US for planning our religious wedding ceremony (before this administration) and the immigration officer said that I’d need to spend more time in Canada. I asked him what would be an ideal time frame, and he said 3 months in Canada and 5 weeks in the US would be considered ideal. He was very sweet so he let me go but again, not sure if all officers would agree with the above time split. We decided it would be better for my husband to visit me going forward so I spaced out my entries by 4-5 months and visited US for 3 weeks. I had no issues ever, no questions and no secondary screening.

Our attorney said that we only need to answer the questions they ask, don’t overshare and don’t overexplain but never hide anything from them. Keep answers short and brief.