I would not subsidize the CCPA or sponsoring dioceses and I would not subsidize the scismatic SSPX run by the excommunicati. If those who reside in such dioceses or are stuck with SSPX saying the only reverent Masses in town while trying to pry Catholics from the Church into the schism want to avoid such disreputable repositories for their money, they can send their donations to the support of the Church to the Rockford Diocese as a thank you for Bishop Doran's general permission to his priests to say the Tridentine Mass without further permission and for his orthodoxy OR to TAN Books and Publishers (as donations or to purchase books and CDs) for the good and wonderfully Catholic work TAN does in a difficult market.
If anyone feels that such contributions may not satisfy one's moral obligation to obey the Church commandment to contribute to the support of the Church, get to know a good priest in your locale and remember that Father has to eat. Bring him good food to sustain him in his Catholic work and the diocese cannot very easily tax away part of the food or gasoline or heating oil or whatever you donate in kind for purposes inimical to the Faith.
prove it.