There is no apparent adverse effect on performance, and indeed, many of the requirements already are being provided on a far greater scale to enable operators to effectively manage their networks. Privacy concerns are actually enhanced under CALEA because it mandates a set of process and authentication requirements that must be filed with the FCC. Yes there is an adverse impact on performance with deeper packet inspection. Check any literature for configuring packet inspection for any router or switch, and this fact is pointed out repeatedly. Or, if you like, think of it this way: in order to perform any kind of inspection on the contents of a packet, the process of forwarding packets will in almost all cases have to be in a store-and-forward mode. Routers and switches go much faster when they just move a packet directly from one interface to another, without the need for the packet to be moved into main memory for handling. Once packets are forwarded using any kind of store-and-forward method (or any like it), performance is degraded down from direct memory transfers.