Comment from Trey Gowdy, the only Republican on the Intellgence Committee who's seen the underlying documents (Nunes has not):
As I have said repeatedly, I also remain 100 percent confident in Special Counsel Robert Mueller. The contents of this memo do not - in any way - discredit his investigation.[1]
[1] https://twitter.com/TGowdySC/status/959495152770469888