Visitor's Visa vs I-94 duration

[immihelp]

Dear Sir/Madam,

My mother's visitor visa expires on June 10th 2009. If she comes in May 2009 and the immigration officer at port of entry allows her to stay for period of 3 months - what she should do if she needs to stay beyond 3 months?

Is it better to let the visa expire and apply for fresh visa after June 10th or can she apply for extension after coming here in May?

If applying for fresh visa, can she submit the application for new/fresh visa before the current visa expires?

[immihelp]

There is no relation to the visa stamp expiration date and duration of allowed stay.

No need to apply for fresh visa.

Read https://www.immihelp.com/visa-stamp-vs-authorized-stay-duration-in-usa/