They also have limits on political speech. The IRS gives them breaks. One of the big misunderstandings/myths is that a church cannot support a political candidate.

Some people cry "free speech violation" but they can endorse a candidate, they just need to give up their tax privileges. This is why the ACLU is split into two parts. One you can donate to and get tax dedications for, but the other is their lobbying arm, and therefore cannot allow tax deductions for their donors.