Don't be concerned, they are stamping the passports less-and-less ... doing electronic captures instead.

For form I-944, do I need to submit real tax transcript or photocopy?

Send the actual tax RETURN transcripts ... you can always get more copies for free from www.irs.gov

Selected as the best answer

My Green card had a mistake & I requested for a correction. While I wait for my new Green Card, can I travel to India?

Make an InfoPass appointment and get a stamp in your passport.

I agree with Mr. Smith ... resend. QUESTION: how many pages did you send? $99 is a gigantic box.

What should i do instead of fillling i 290b form ,i mistakenly file i 601form?

Your facts are confusing and there is no immigration, nor department of state form DSL851 ... please add clarifying comments.

Would I file n-400 or n-600?

File a FOIA for your, and your parent's immigration files. Then talk to an attorney about form N-600.

Can my 15 year old attend high school on F2 visa in the USA?

Yes, absolutely. Please review this chart: https://www.ice.gov/doclib/sevis/pdf/Nonimmigrant%20Class%20Who%20Can%20Study.pdf

The name change is done in a local/state court process. BUT, depending how the adjustment of status is proceeding, it might be wise to wait.

I’m on H1B status in USA, is this legal to work remotely for foreign based company and take salary?

no No NO You can not work in the US for any one other than the company that 'owns' the H-1B. Sorry

No, she can't be in the US on an H-4 ... unless it is a SUPER SHORT assignment in India and you are on the US payroll.