In 2007, before the Presidential primaries had started, I endorsed Barack Obama. Now I'm endorsing him again in his run for reelection. In order to explain why, I'd like to revisit the 6 reasons I listed back in 2007.

Iraq

Obama was against this war from the beginning and pledged to bring it to a close. On December 18, 2011, the last U.S. troops left Iraq. Promise kept. This was and is one of the most important reasons I support President Obama.

Diplomacy

The US was engaged in two land wars when President Obama took office and now we have one. Not only did he end the Iraq war, but he hasn't started any new ground wars. I'm not entirely comfortable with our expanded use of drone strikes, the (now ended) escalation in Afghanistan or the bombing in the Libyan civil war, but I'm afraid that Romney or McCain would have done even worse.

Health

I knew Obama's proposals in healthcare reform would be more modest than I would like and that was true. After months of haggling with Congressional Republicans, the final version of the Affordable Care Act was even more moderate than I expected. The public option was stripped out in an attempt to get at least some GOP support. Many elements of the plan were modeled on proposals from Republicans like Mitt Romney and the Heritage foundation. Despite his compromises, not a single Republican voted for the bill. Stranger still, they all decided that their own ideas were unconstitutional and socialistic once Obama had embraced them. Though far from ideal, the AFA is an improvement to our broken healthcare system. More people are getting coverage and the insurance companies have fewer tricks for denying healthcare to their customers.

Energy

The CAFE Standards that set the pace for vehicle fuel efficiency have been improved as promised. We're importing less oil and producing more energy at home. The electricity generated from renewable sources has nearly doubled in the last 4 years. Increased used of cleaner-burning natural gas has meant that we're burning less coal and putting less pollution into the air and water. We've still got a long way to go, but we're moving forward.

Lobbyists, corruption and open government

Congress is weaning themselves off of the opaque appropriations process known as earmarks. The Obama administration has supported this change and they've continued to push for transparency for government spending, moving more information online and making it accessible to everyone. We need to know how the money is spent if we're going to be informed voters. The President hasn't been as firm as I would have liked when it comes to lobbyists, but he still wins this category by a country mile.

Experience

In 2007 Obama had more experience in public office (10 years) than most of the primary candidates, including Mitt Romney who has only served one 4-year term as governor of Massachusetts. Obama has now served 14 years, including nearly four as President. He has calmly faced natural disasters, financial crisis, war, uprisings in the Middle East and an obstructionist Congress.

And here are a few more reasons I support Obama that didn't make my 2007 list:

Equality

Obama oversaw the repeal of Don't Ask Don'T Tell, the policy that Bill Clinton put in place to bridge the gap between the strict ban on gays troops and a more open policy. Under DADT the military discharged over 13,000 troops at a time when we could ill afford to turn away patriotic young people who want to serve their country. Now anyone can serve in the military regardless of who they love.

The President has also publicly supported marriage equality, a first for any President in the history of our nation. This position is supported by a majority of Americans, led by a huge majority of young people.

bin Laden

After years of the Bush administration's stance of not really working toward capturing the 9/11 mastermind, Obama pursued the evil bastard, personally pushing for the spare helicopter that allowed the daring mission to succeed. Of course the brave troops who actually put boots on the ground deserve the lion's share of the credit, but it was a victory for the President and the nation as a whole.

Economy

In 2007 no one knew just how bad the economy would get. When things started getting really awful in the fall of 2008, the electorate turned to Obama and the Democratic party to clean up the mess. Years of trickle-down economics, irresponsible wars and financial deregulation led to the worst recession in 50 years. Within months of taking the oath, Obama oversaw a reversal of soaring unemployment and the beginnings of a recovery. We still have a long way to go, but it's way to early to give up and return to the failed policies that got us into this mess.

Sources and further reading:

Key features of the Affordable Care Act
Romneycare and Obamacare Differ Only in Inconsequential Ways
Renewable electricity
Comparison of Obama and Romney energy policies