Under what circumstances, can US L1/L2 visa get denied?

So long as you were truthful in the application and there aren’t any glaring issues in your background, then the interview process should go pretty smoothly. The interview process is mostly a formality, but it’s also designed to make sure that everything is on the up and up.

Basically:

Be honest.

Answer the questions.

If you have any specific concerns that you think may hinder the interview process, then you may want to run that by an attorney. LawTrades Micro may interest you. Basically, for a low rate (usually $25) you can ask an attorney a legal question and then you will receive a customized response within 48 hours.