Different port of entry from Passport stamp

[sudi122]

Hi all,
My Mother is expected to come in August on Visitor's visa. She was sponsered by my Sister who stays in Boston, so her visa stamp has boston as the city she would be entering. But She will have to come to Detroit first for my wife's delivery and will go to boston later.

My Question is: "If her port of entry is Detroit (instead of Boston), will she have any trouble at the immigration."

Please advice us regarding this matter. Your advice will be very helpful for us.

Thanks in Advance,
Sudi122

[immihelp]

That's not a problem. You can enter from any port of entry.