Hi, This question is about my parents. I am a US citizen planning to sponsor my parents for Green card here. My question is: my parent own sizable amount of real estate abroad which includes their primary home and investment properties. My question is based on the tax law back home they won't have to pay any taxes on the sale of their primary home abroad (home for over 15 years). However, once they move that money here will they have to pay taxes here? How will the tax be determined based on the price of the primary home 15 years earlier. Please advice if it would be better to hold off on applying for green card until the primary home is sold back home. Thank you

Really no answers? I really need to make a decision on this. Please advice