For EB-2 classification, is it necessary that I should have at least one year of experience after obtaining my master degree?

Strictly speaking, EB-2 sponsorship does not require a year of experience. There may be other strategic reasons that one year of experience is...

I-130 withdrawal in order to obtain F-1 status

Your ability to get a nonimmigrant visa (student, in this case) has been severely complicated by the pending petition, but it is not impossible if...

How long for interview

About 5-7 months, as a rough estimate.

Detained for 12 hrs at San Ysidro Border Control; and should I be worried about entering the U.S again? Is there a file on me?

Yes, there is a file on you and yes you would want to take precautions prior to seeking entry to the U.S. or applying for any immigration benefits.

How much time it takes for USCIS to process L1A visa applications if filed under normal processing?

About 3-5 months, if no RFE is issued.

I am a married daughter of an american citizen, and my father filed my petition last 1998..if possible how long it takes?\

Assuming you were born in Mexico or the Philippines, it may be about another five years or so for the priority date to become current.

An invitation letter is only somewhat useful. It may show that she has a definite, fixed reason to visit for a short amount of time, but that will...

My company is planning to convert my L1b visa to L1A visa , my question is if my L1A visa case is approved , after that would I

Sure, if you meet the requirements for an EB-1 multinational executive or manager. Using the L-1A as a stepping stone to EB-1 is not uncommon, but...

I would like to know when is the right time to apply if application for citizenship was denied due to good moral character

It depends on the reason for the denial, but generally you need to prove good moral character for 5 years preceding your application for...

Spouse of a USC - Am an executive but not a graduate

Hello. Your education level is not relevant to your eligibility for a spousal visa, so I don't foresee that this should be an issue.