Thank you Nelsona!!
I read from some other articles on this
----Legacy Immigration and Naturalization Service (INS) guidance says that if you have an approved I-140 immigrant green card petition, you should not be denied TN admission or extension solely on that basis, if you can still establish that your intended TN stay in the US will be temporary. Therefore, you could technically get TN admission or extension while your green card petition is pending, but it’s not easy. First, you would need to establish that your current TN work objective is totally separate from your future intent to immigrate. Second, you would need to establish that your current TN work assignment has a specific ending date, and that you intend to depart from the U.S. on that date.-----
Seems that it is pretty tricky here, it might be difficult to answer if the custom officer questions on this. Do I need to worry about it? Anybody has some experience?
I am planning a family vacation abroad, but very worry if got denied entry when come back. It would be a big mess in the life, can't go to the US home, can't go to my job, kids can' t go back to school....
Would really appreciate any related information!!