Good question.
"For the Lord's sake accept the authority of every human institution, whether of the emperor as supreme, or of governors, as sent by him to punish those who do wrong and to praise those who do right." I Pet. 2:13,14
"As servants of God, live as free people, yet do not use your freedom as a pretext for evil." I Pet. 2:16
"First of all, then, I urge that supplications, prayers, intercessions, and thanksgivings be made for everyone, for kings and all who are in high positions, so that we may lead a quiet and peaceable life in all godliness and dignity." 1 Tim. 2:1,2
"...Honor the emperor." I Pet. 2:17
"Give therefore to everyone what you owe: taxes to whom taxes are due; customs to whom customs; respect to whom respect; honor to whom honor." Romans 13:7
"...Give to Caesar what is Caesar's, and to God what is God's." Matthew 22:21