Yes, it is sad to see the entanglements of Church and State that may be found in European countries, where the state governments in centuries past had taken upon themselves to administer church tithes and the church meddles in government affairs. We never had this type of tithing law here in the United States. There are two sides to the tax coin. Jesus said, Render unto Caesar the things that are Caesar's and to God the things that are God's. We must pay property taxes, gas taxes, income taxes, and more taxes to the government for the operations of the state. But when it comes to the church tithes and offerings for the operations of ministry, you are highly encouraged to give to church and charity. You might even get a tax deduction, and also a blessing, for doing that. But it is the church's job to instruct in regards to the tithe, not really the government. So if you look at it that way, yes there is a separation of sorts between church and state here in America. I know, it is complicated.
But anyway we never got our money from Spain so there is nothing that I would need to discuss with them.