Can I travel on my US VISA before it Expire?

It depends on if it is a single entry or multiple entry visa. If you have a single entry visa (and you have already been there and back) then it won't allow you to enter again. If you have a single entry visa and you have Not been there, then you would be allowed. If it is multiple then you're fine either way, so long as you are there and gone within the time limit your visa allows.

nicely, first of all, does the visa on your passport expire on March 12, or does the I-ninety 4 card that you've been given once you entered the US expire on March 12? it makes lots of huge difference. in case your visa is valid, you ought to apply it to enter the US at any element beforehand it expires, and also you would nevertheless be approved to stay contained in the US for 6 months. so, in case you got here into the US on March 11, you would nevertheless take care of to stay until eventually September 10, as an party. a similar ingredient is real for departures. as long as you go away on or beforehand your I-ninety 4 card expires, you've not overstayed, so in case your approved stay expires on March 12, you're effective as long as you go away by ability of March 12.

You can enter the USA at any time, just so long as it's valid on the date you enter the country. It makes no difference if it expires while you are here in the USA.

Yes, because your visa is still valid, they will allow you to enter. That's that the visa is for.

Just make sure you leave the country (or extend the visa) before it expires.

as long as it's still valid on the day you show up at the airport, it's not a problem.