One of the most significant measures of a president’s success is the number of “firsts.” Some are worthy of praise. Ronald Reagan, for example, was the first president to directly challenge the Soviet Union and attempt to collapse its empire rather than try to co-exist through a policy of “mutually assured destruction.”

Others firsts, however, are dubious, and it’s safe to say that Barack Obama could easily establish himself as the president with the most firsts of that kind.

He was the first president to lead the U.S. to a downgrade in its credit rating.

He was the first to refuse to defend an existing law — the Defense of Marriage Act — by declaring it unconstitutional.

The list of Obama’s firsts seems limitless, and this forum is your opportunity to help compile a record for the history books.

What are Obama’s firsts?