I should clarify the parent post - when they said "types of ads", what they really meant is the content. The 1st amendment forbids the government from discrimin

I should clarify the parent post - when they said "types of ads", what they really meant is the content. The 1st amendment forbids the government from discriminating on the content of a message, but they can restrict messaging in general. Though I believe there are limits to how much they can restrict that as well - a blanket ban on protests, for example, would likely not fly.