Here is how to pray for President Obama on this issue:
It is an abomination to kings to do evil,
for the throne is established by righteousness.
Steadfast love and faithfulness preserve the king,
and by steadfast love his throne is upheld.
The king's heart is a stream of water in the hand of the Lord;
he turns it wherever he will.
To do righteousness and justice
is more acceptable to the Lord than sacrifice.
Whoever pursues righteousness and kindness
will find life, righteousness, and honor.
My son, fear the Lord and the king,
and do not join with those who do otherwise
take away the wicked from the presence of the king,
and his throne will be established in righteousness.