No. The arrest is not likely to be reported, but if you were fingerprinted, a copy of them will end up in the FBI database.
Misdemeanors may show up on an FBI background check if the offense was reported to law enforcement and the information is accessible in the individual's criminal record. The FBI background check is comprehensive and includes both misdemeanor and felony offenses.
It means that at some point in time, local or federal law enforcement have sent your fingerprints to the FBI, or, a conviction of a felony or "serious misdemeanor" was reported to them. Basically, it means that you have some sort of blemish in your past. You can also have an FBI number if you joined the military as part of their background check.
Forever.
Easy, Whatever Bank Your With Reported You
They can't just arrest you for questioning. What they can do is to invite you in for question.
Neither one of them ..Is Trump firing The FBI chief the premier example of cyber war manipulation
The FBI does arrest individuals. They arrest people charged with federal crimes. They have the choice to question the individual in a local police department or at their own offices if that is a viable choice.
yes
Usually includes routine FBI.
yes
they stake out in front of the persons house and see if they are really selling drugs and if they are they go into the house and arrest them
Hell yeah. They can arrest the president if the circumstances are legitimate.