The Wall Street Journal has a fascinating interactive graphic showing various Bibles and Bible verses used during Presidential Inaugurations. Very cool.
I pray that all our presidents would not only use the Bible as Inauguration decoration and symbolism, but actually read and govern according to the Scriptures. Whether you are a Democrat or a Republican or an Independent, God is very clear about our duty to the ruling authorities.
1 Timothy 2:1 (ESV)
"First of all, then, I urge that supplications, prayers, intercessions, and thanksgivings be made for all people, for kings and all who are in high positions, that we may lead a peaceful and quiet life, godly and dignified in every way. This is good, and it is pleasing in the sight of God our Savior, who desires all people to be saved and to come to the knowledge of the truth."