God always says to follow the laws. Anyone breaking the laws is committing a sin. God hates sin. Therefore God is for a wall.
In case anyone ever wondered how God felt about it when Nero was slaughtering Jews, or Hitler was gassing the Jews. Your argument is silly, because it's an argument for ethics to be applied based on civilization and geographical location, in which case you support "Might Makes Right" ethics or Arbitrary Ethics, rather than Objective Ethics.
What God actually said was that none shall be before God, and when he was referring to Law, he was referring to his own law, not the Laws of some ruler, especially since there were rulers in opposition to God. God even stated when the Israelites asked for a king, that they were not rejecting the Judges, but rejecting God. God saw the use of a ruler as placing one before him. In the same passage in which you would be referring to(
Romans 13:1-14), God plainly states that there is no authority before God. What was being said is that he is always the governing authority. In other words, the rule of man doesn't exist to God.
Galatians 3:11 ESV
Now it is evident that no one is justified before God by the law, for “The righteous shall live by faith.”
Acts 5:29 ESV / 77 helpful votes
But Peter and the apostles answered, “We must obey God rather than men.
In fact, throughout the New Testament, Jesus and his Apostles are fighting the "Law" every step away, the Pharisees were ENEMIES, as they were trying to hinder Jesus, and had twisted the laws to suit their own ends.
St Paul's Letter to the Romans, chapter 13
1
Let everyone be subject to the governing authorities, for there is no authority except that which God has established. The authorities that exist have been established by God. 2 Consequently,
whoever rebels against the authority is rebelling against what God has instituted, and those who do so will bring judgment on themselves. 3 For rulers hold no terror for those who do right, but for those who do wrong. Do you want to be free from fear of the one in authority? Then do what is right and you will be commended. 4 For the one in authority is God’s servant for your good. But if you do wrong, be afraid, for rulers do not bear the sword for no reason. They are God’s servants, agents of wrath to bring punishment on the wrongdoer. 5 Therefore, it is necessary to submit to the authorities, not only because of possible punishment but also as a matter of conscience.