I'll eventually finish that long-winded post that I started about the President's role and head of state vs. head of government. I've been distracted by various other things, and I've blown what free time I had by participating in the ultimate in futile activities - arguing about politics on the internet.
I never learned to take my father's advice - be wary of arguments about religion and politics, because they are fundamentally emotional subjects rather than rational ones. Both religious believers and people with strong political views generally base their positions on articles of faith which they have accepted. It's not impossible to change somebody else's articles of faith, but it is usually a long and difficult process - not something likely to happen in a casual online argument!