Going through Customs in U.S.A. after visit from Lebanon?

I traveled to Beirut for a vacation in March of this past year. On my way back into the U.S., Customs must have flagged me for some reason and I had to go through the whole inspectin process of going through my bags, asking who I was there to see, what I did when I was there, how my trip was paid for etc.. I obviously had nothing to hide and was eventually allowed through with no further problems. I didn’t know anybody in Lebanon the last time I went, but, throughout my vacation did meet some people I have kept in touch with via email and travel forums.

My question is this, I am going back there for a longer stay in August to see everything I didn’t get a chance to see last time. I know that I will again get flagged due to the destination and time frame.

So, when they ask me this time if I know anybody there, I am assuming I should be honest, but, it’s not like I really know these people that well or plan to spend my vacation time with them. I am wondering if I should even say that I know anybody there or not, I don’t want to lie and end up in some interrogation room somewhere. Maybe I am overreacting but it was really not a pleasant experience the last time and I just want to know what to anticipate/expect this time around.

Also, I work for a state government agency and they asked me for my identification/badge. I purposefully do not travel with that kind of documentation as I don’t want to be overseas and be associated with a government which others may find oppressive. Should I bring my identification with me this time?