I have a fairly new home I purchased. I am changing my outlets as I am painting the rooms (Laundry Room) and noticed that the previous home owner put in a laundry board (built in) and wired to the nearest outlet on the wall. They used 12 gauge wire to the outlet (from the built in iron board) I am changing that has 14 gauge running to it from the breaker (standard 14 gauge wire the builder used). Is it a fire hazard to have 12 gauge running the built in iron board from a 14 gauge wired circuit? Should I re-wire with all 14 gauge? Also, do you recommend I replace this outlet in the laundry room with a GFI outlet instead of the standard 15A that is in it now?

Thanks for the help!