He continues to support the unconstitutional actions of the government such as the NSA spying program. His drone policy has kill thousands of innocent people over seas. The fact that Gitmo is still open, despite the fact that the NDAA of 2012 clearly has a clause that would allow him to shut it down despite the objections of any other government branch. Like the vast majority of the GOP and DEM's, Obama is still protecting the banks and Wallstreet from the people and the US legal system. The fact that he even signed the NDAA 2012, it being one of, if not the most unconstitutional piece of legislation ever signed by a president.
If Nixon is the worst president this country ever had Obama and Bush are tied for second place.