I have no idea how you got on to the topic of border walls.
As I have indicated, there is a large task force of various people including the doctors. They debate and provide advice to the president and they president makes the decision.
Fauci is but one person on that task force who provides advice. So far he has supported Trump’s decisions and is highly respected by Trump.
In this battle, I support Trump and his task force.
So you are wrong and have a nice day.