President Obama's predecessor staked a huge claim to space. Bush boldly declared the right to pursue space based weapons. There has been no major reversal in policy under the Obama reign, just a signaled breakdown of walls between the Pentagon and NASA.
Obama railed against the spread of nuclear weapons, while promoting "just war" in his Nobel Peace Prize acceptance speech. He was eerily silent on space weapons.
Early in his administration, the White House web site called for a "worldwide ban on weapons that interfere with military and commercial satellites." That is not a ban on all space based weapons.