You should contact the NVC and advise them of this.

Is there a court fee for asylums?

No court filing fee in asylum cases.

In the form I-864 Part 6- Should the boxes 19b and 19c be left blank because 2d and 3d most recent tax return was not filed?

Yes to your question. Please note that you will require a joint sponsor in your case.

Or can it be submitted at the interview?

You need to file them when you file the adjustment of status application and not at the interview.

Does the K3 visa option work for Canadians? Does it shorten the separation time?

You raise questions which need to be analyzed more carefully in order to determine which is the best for you to proceed. Straight filing of a...

only one side per page is most recommended.

Is it possible & quicker to enter the US as a visitor after the wedding and start the I-130 petition and other forms there?

You have to be carful with this approach as you face the issue of pre-conceived intent. Best you consult with a qualified attorney who can advise...

Applying for L1 while on B1/B2 visa

Many come to the USA and then file a change of status to a working visa such as an L-1. Your case needs to be further analyzed in order to...

You and your sister would have to have been under 18 years old when they got married. if so, then she can petition for you.

Green card petition

The A number is like your social security number - it will never change.