From the Book of Common Prayer, page 820, prayer #19, For the President of the United States and All in Civic Authority:
O Lord our Governor, whose glory is in all the world: We commend this nation to your merciful care, that, being guided by your Providence, we may dwell secure in your peace. Grant to the President of the United States, the Governor of this state, and to all in authority, wisdom and strength to know and do your will. Fill them with the love of truth and righteousness, and make them ever mindful of their calling to serve this people in your fear; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God forever and ever. Amen.