回複：還有比我更尷尬的嗎？請教。

So LC is EB1 and use the money reason to refuse to bring your son to US. Usually, money problem or public charge is common in family based that even having struggle to meet 125% federal poverty. You also mention you will do residency to complete your MD license, it seems that you will become high income in a few years and what will your LG do when you do earn $200K a year practicing medicine?