My main concern is why are we talking about another tax when the revenue from current taxes is not being spent?

This tax would just add to the numerous other taxes currently being collected and will just make things more complicated and harder to determine what the true cost of a ticket is. A good example: Yesterday United was offering a $88 return from from SEA to DFW, after all taxes the cost of the ticket rose to $116.50. I am not complaing about the need to pay taxes but there has to be a better way to collect it then the current method's used.

If it is determined that more taxes are needed to pay for security, they should bump the US tax (currently at 7%) back to 10% (or more), use the proceeds to pay for everything needed and do away with all of the other taxes. The only exception would be on international tickets where other governments currently collect taxes.