See this old Free Republic post about Sasse’s proximity to the Congressional Page scandal:
http://www.freerepublic.com/focus/f-news/3428050/posts
Ok, Sasse was a tutor, not a supervisor, to the page program from 1997-1999.
The Foley scandal broke 7 years later although Foley was being creepy with pages as early as 2000.
Hastert's only involvement was that he was the Speaker and should have known about and stopped the abuse.
There's absolutely nothing to tie Sasse to either the Foley scandal or to Hastert.