The Democrats controlled the House in the 80s, so spending budgets came from them.
Right. It's the Democrats who are really into extreme tax cuts for the wealthy! Why didn't I notice this before? I also apparently missed the part where the president signs bills that he doesn't support.
The "Reagan tax cuts" that passed were very close to what Reagan was seeking in each case.
"According to this deliberately deceptive graph..."
Anything that shows financial issues a long period of time, without including inflation, while trying to argue that "the last person in the list did the most of X", is being partisan at best, intentionally misleading at worst. In reality, even inflation alone isn't enough; the best figure you can use is debt as a fraction of GDP. But I digress.
As a second issue, you make it misleading when you focus on debt and not the deficit. Because the deficit makes much clearer what sort of situations the next person inherits, as well as the immediate impact of financial shocks and passed bills.
The reality is, when Obama took office, there was a massive deficit left behind by Bush. During Obama's administration it reduced every year.