You should really understand the constitution before you start expounding about it. It protects you from governmental persecution from what you say. Corporations have "personhood" in America and it goes back to as early as 1819, it was also brought up in a case in front of the supreme court in 1856 in regards to the 14 amendment. There are plenty of vehicles for him to have his say, just as it's an employers right to not be apart of what he says.
If I have a right wing employer and find myself on the news with a company shirt on expounding liberal views it's that employers right to fire me. Atleast in non union right to work enviornment. I won't even charge you for that lesson but will expect a thank you for imparting a little knowledge, even though I know I won't get it.