it’s valid until midnight of the expiration date on the visa.

@uscis is the boss I think you run the risk of them not allowing you in. I would try and get a renewed visa and then come.

As long as it’s not yet expired you can come in to the US. But be mindful, don’t wait until you have two days left on it before you start your trip.

what if the plane gets delayed definitely not a good idea to wait till the last day.. like why???

I would not do it. I had problems with my visa expiring 2 months after me traveling.it was the most horrible experience of my life. they had me in a room, asking me a lot of questions like I was a criminal. I genuinely regretted traveling that day and wished I just had stayed home 😩