I am a US Citizen married to a Non Us Citizen. We have 2 kids together. Can he take the kids and disappear to his country?

Contact a family lawyer. Goodluck.

How long somebody have to wait for immigration to come and pick them up?

I agree with my colleague. Goodluck.

I want to change my status from f2 to f1 what happen if my f1 refused??? I am worried coz my f1 refused 9 times from India I cam

No, you revert to F2 if your F1 is denied. Goodluck.

Asylum petitioner/applicant

EAD takes 90days if no delays. Yes, RFE wii delay it. Goodluck.

How long does it take to place a lien on a house?

This ended up in immigration. Post again and omit the 'a' in 'a lien'. Goodluck.

This ended up in immigration. Goodluck.

I 864 joint sponsor reported lost income.

Perhaps a joint sponsor might help. Goodluck.

Overstayed student visa and left country without passport/documents being checked. Return for visit via VWP?

He would have to answer the questions accurately. A visitor visa is advisable to avoid disappointment at port of entry. Goodluck.

How to ask for a permission (tourist visa) to enter the U.S. after being inadmissible in a previous entry.

I agree with my colleague. It is advisable to retain an immigration lawyer to represent you if you have concerns. Goodluck.

Can we file for I485 application if the priority date is current and my H1b transfer petiton is pending.

Your employer's lawyer is there to address your immigration concerns. Goodluck.