I am a Turkish citizen holding a US B1/B2 visa living in Canada. My girlfriend is a Canadian citizen, holding a TN-1 visa, will be living in US in a few months. We will be visiting each other with frequent intervals (2 day visits one a month to both directions with a few potential outliers). I heard that frequent visit to partners can be considered as "intent the immigrate" by border people. How likely is it for this to cause me problems since my partner is residing in US under a non immigrant visa? Is frequent visits with full disclosed intent likely to cause problems?
Will she have problems with US border when returning to US if she leaves frequently under a TN visa?