Do we still have separation of powers between Congress and the President? Or do they now work together more than separately?(This is not about...

We most definitely still have separation of powers between
Congress and the Presidency.  This is sometimes more obvious and sometimes less, but it
is clearly there.

For example, during this administration,
President Obama has not been able to get what he has wanted in terms of an energy bill
and was not really able to get the health care program he wanted.  This was because of
resistance from various parts of Congress.

Similarly,
President George W. Bush was not able to change Social Security the way he wanted to (by
encouraging private accounts).  He was also unable to get the immigration reform bill
that he wanted.

Congress is by no means willing to roll
over and let the president do what he wants.