well, the way i see sueing is..... you gotta win it.. i mean, you aint gonna win against the US embassy and get the VISA if the embassy denies it... so there is no point of sueing em and wasting you time.... but i might be wrong again.. but thats what i have heard.... but if you are in the US, and you wanna sue someone with somee stupid reason, there is a high chance that you will win... check this out: a bulgar sues a family saying that he had to spent a week or so... eating dog food and living in unhygenic condition.. coz he was trapped inside the garage and the family were on vacation and guess what, the bulgar win the case a robber sues a bank because they pulled the alarm when they find out that he was deaf and pretended that they didnt do nothing.... he sues em for taking advantage of him being deaf.... and he wins.... even tho he was there to rob the bank..... i love USA.... you can do whatever you want.... but again, sueing the embassy for not issuing you a visa.... coz you aint gonna win..