The FBI is in Kenya investigating the mall shooting just 3 days after the attack. Why did it take them 3 weeks to get to Benghazi?

Good question.

Maybe, they had to let his muslime bros get all the weapons and ammo out first.

Hidden agenda?

Better security in Kenya.

Still on Benghazi?

Well I guess if you have to have illegitimate stuff because the pres is too legit to find anything real to use against him then this can be one of them.

maybe because the CIA/FBI planned it?

Really? Wow, I bet the dead Liberian Ambassador and his staff would have liked to have known that before their bodies were drug through the streets.

maybe cause the invitation was delayed till the gov there finished
destroying evidence of their participation

possible... but i think our government had to clean up first...

told to stand down in Benghazi!

government had military in Benghazi the NEXT DAY

we can ponder the difference between sending military vs sending 'FBI;, though

Agreed.

Another reason is the political ramifications on our administration during sensitive times. The Obama administration had gained approval by killing Bin Laden, and "cutting off the head of Al-Qaeda". We were led to believe that this would cripple that terrorist faction.

Seems it didn't work as planned. To admit that would hinder the campaign advantage.

Unfortunately any party and any campaign (with a very few exceptions) would do the same thing.

It's called politics.

Couple these together, and i believe we have answered the OP.