Does causality apply to itself?

[Specforces]

The basic principle of cause and effect. Does it apply to itself? Did someone/something cause causality to come in to effect/being? I was thinking the other day that the existence of an infinite and uncaused God would be possible if there was a time in which causality didn't exist. If God were to always exist, couldn't he have caused causality? This would account for a theistic view of God, namely an infinite, necessary Being.