Actually we don't know that that pastor ever expressed any anti-Catholic sentiments during a sermon. Do you have proof of that? This isn't quite the same as Obama's situation where we know Obama sat through vitriolic sermons and we have recordings.
As a conservartive Lutheran, politics is never mentioned in sermons, it is frowned upon.. They preach the law to show us our sins and need for a Savior and then the Gospel to proclaimed we are saved.. You go to any WELS, LCMS or ELS Lutheran church and this what you will.