Isaiah 6:1
In the year that King Uzziah died, I saw the Lord sitting on a throne, high and lifted up, and the train of His robe filled the temple.

To me, this marks a personal change in Isaiah. From Chapter Five forward, his prophecies are different.
It doesn’t happen until King Uzziah dies.
King Uzziah was a good king that advanced his kingdom with God’s help. Please read a summary of his reign found in 2 Chron 26:3-15.
A great man held in high esteem can cause people to look to him for answers rather than looking to God. I think this is the case with Uzziah. Perhaps the people had not seen such a king since the death of Solomon.
However, politics and laws do not change hearts or morality.
Uzziah also sinned by trying to do the service of the priests. (2 Chron 26:16-21)
With Uzziah out of the way, Isaiah has a vision of God on the throne.

I have lived through many presidents from Eisenhower to Trump – twelve in all.
Each one promised change. Still, each administration was riddled with problems like war, disease, domestic violence, debt – each one facing their own difficulties.
And nothing has really changed.
We need to take our hopes off the president and Congress and place our hope on Him that sits high and lifted up on the great throne.