Will it be stupidity if I don't change address of CA but I attend college in Texas for reschedule of interview in CA ?

The last thing you want is to be caught by USCIS lying or "hiding" information.

COS from H4 to F1 , Travelling back to USA before COS start date.

If you want to be in F-1 status in the U.S. apply for the F-1 visa before you return.

I worked on H1B visa from May-2009 to Feb-2010. Could I use same H1B petition now, How many more years could I work on that H1B.

You need to find an employer and have them file a new H-1B petition for your benefit. Typically H-1B status in the U.S. is for a maximum or 6...

Its not difficult to change from G-4 to H-1B. However, we need to know more information, like how are you entitled to file for H-1B or residency? ...

Any way to help a friend in Uganda get a visa for a visit? He has been repeatedly turned down for arbitrary reasons.

No. They have discretion and its their decision. If the embassy has acted inappropriately in some other way, talk to a lawyer. Turning him down...

Can you help me get my Citizenship as quickly as possible? I have been in the Us for 4 years.

Its very possible you can apply for US permanent residence or a "green card" based on extraordinary ability as an athlete. Do you have to be a...

Can H4 visa be staying US on a paid sick leave from his employer in other country ?

You are not working in the U.S., so I don't see a U.S. immigration issue.

Getting divorced from meth addicted husband. My 10 yr green card is marriage based. He's threatening annulment. What can I do?

You won't lose your status under these circumstances.

Time period for a work permit related to a j-2 visa

Yes it's true, his visa does not grant status, his I-94 grants status, so your status and this work authorization is dependent on his status.

What, if any, non-immigrant working visa am I eligible for in America?

Maybe I visa if you get a job offer with foreign press, or O depending on experience and accomplishments, peer recognition etc, or H1b/E3...