Is it hard to pass port of entry, even with an approved tourist visa?

[semidevil 12]

We are in Hong Kong for vacation, and when we fly back to the U.S, the mother in law will be tagging along and staying for a couple weeks. She still has her 10 year tourist visa from about 3 years ago, and this will be her second visit to the U.S. She does r really have a payroll or proof of employment since her income comes from her kids. I am a U.S citizen, wife is green card. What's the chance of there being an issue once we land?

[Teddy B 17,252]

Without any solid ties, there could be an issue.

Are her circumstances the same now as when she was previously allowed entry?

[semidevil 12]

Her personal situation was the exact same as last time, and she did not have to show proof of personal ties. On her last visit, she was visiting a family friend, so she got an invite letter. This time around, she is flying back with us, so obviously that is not needed

[Teddy B 17,252]

That bodes well for her then(invitation letters really don't do much in most cases). Hopefully she will get a CBP officer who is having a good day and all will go smoothly.

[BlueSteel 3]

Judging from the OP, she should be fine. It is not unusual for foreign family members to accompanying USCs or LPRs. She still subject to inspection even though she has a B2 visa. Just have her be herself and tell the truth.