I filled my I-751 Application a year and 2 days now to California service center and I had done my biometric since..

An attorney could perform a "Writ of Mandamus" to force the USCIS office to make a decision. However, 2 years could be excessive and could be...

Original charges will be on the background check, as well as the conviction charge. You can get an expungement for Operation of a Watercraft. i...

Can arrest warrant be issued in my name for with out being arrested?

Yes, in short you can have a warrant without having an arrest. At this point you most certainly have a failure to appear and will have your hands...

Can I file for I-485 adjustment of status with I-130 pending?

You can file an I-130 contemporaneously with I-485 for USC spouse petitions. You can file it now just make sure you link the two forms together...

After I enter the USA on my K1 Visa and marry, can I stay?

As my colleagues established, that is fundamentally the purpose of K-1.

How to get my green card after getting married with a US citizen?

It is not impossible since you would be petitioning as a spouse but it could be denied at their discretion. You have an uphill battle that will be...

If you were married, or do get married, you can petition for your husband, but there is no domestic fiance petition. 19 years old will suffice, so...