From Archbishop John Carroll's Prayer for Government, 1791:
We pray Thee O God of might, wisdom, and justice! Through whom authority is rightly administered, laws are enacted, and judgment decreed, assist with Thy Holy Spirit of counsel and fortitude the President of these United States, that his administration may be conducted in righteousness, and be eminently useful to Thy people over whom he presides; by encouraging due respect for virtue and religion; by a faithful execution of the laws in justice and mercy; and by restraining vice and immorality. Let the light of Thy divine wisdom direct the deliberations of Congress, and shine forth in all the proceedings and laws framed for our rule and government, so that they may tend to the preservation of peace, the promotion of national happiness, the increase of industry, sobriety, and useful knowledge; and may perpetuate to us the blessing of equal liberty.We beseech Thee, through Jesus Christ, Our Lord and Savior, in the Unity of the Holy Spirit. Amen.
CatholicCulture.org is sponsoring a perpetual (around-the-clock) 30-day Rosary, asking God to bless the new administration with an authentic perception of the Good. You can sign up here: Obama Rosary.