Increase chances getting B2 visa after F1

Anything you can do to demonstrate your ties to your home country will help your chances - such as having a job, having a lease/mortgage on your...

Assuming everything is filed properly with all the correct supporting documentation, it takes between 75-90 days from the date of filing for the EAD.

Immigration status

You can apply for naturalization 2 years and 9 months after you became a permanent resident, assuming you remain living with and married to your...

Am on L1 Visa with company A, planning to apply H1B with company B. Can I work as L1 visa after my H1 Visa?

It depends on how the H-1B petition was filed - whether as a change of status or "out-of-country." Consult with your employer's immigration attorney.

H4 visa stamping with expired H1 visa and change of employer ???

There are no 100%s in immigration law. Without knowing further information about your dependent's background, all one can say is that your...

Expired H1B Petition I797 -> Still Valid ?

Even if you held H-1B status during that time (which is not clear), it has been more than 6 years, so you would NOT be cap exempt.

L1A visa

If you are resident in Canada, regardless of where your office is based, you should be able to apply at the U.S. Consulate in Canada with...

Has anyone ever filed an immigrant petition on your behalf with the United States Citizenship and Immigration Services?

That would not be an immigrant petition filed on your behalf.

Concurrent filing EB1B...I140/485 pending >180 day...possibility of layoff....what should I do?

If your I-140 gets denied or revoked by your employer before it is approved, you will have some problems. Hopefully you still have some underlying...

How long can a El Salvadoran stay in Juarez Mexico?

You need to either consult an immigration attorney in Mexico or check with the Mexican Consulate. This forum is for U.S. immigration questions.