14-2 wire for recessed lighting on 20A circuit
I know it's code to use 12awg wire for a 20A circuit, but during my remodel, I discovered 14-2 wire in places like outlets and lights, while the homerun wires are all 12-2 to 20A breakers. This is all original wiring. Is this an exception to the code?
If so, can I use 14-2 wire for my recessed lighting even though it would be on a 20A circuit?