The fact that is an expression sometimes necessary and proper, but sometimes a clumsy way of saying what might be said more simply. When it is preceded by 'in view of' or 'owing to' or 'in spite of' it may be merely an intricate way of saying because or although.
Owing to the fact that the exchange is working to full capacity. (Because the exchange...)
I was not aware of the fact that the report had been published. (I did not know that the report had been published.)
The delay in replying has been due to the fact that it was hoped to arrange for a representative to call upon you. (I delayed replying because I hoped to arrange for a representative to call on you.)
Here again observe how much easier it is to write naturally if you use the first and second persons rather than the third.