It never will - Franken loses his chairmanship of the committee come January when the Republicans take power, which only serves to highlight that this "investigation" is merely him pandering to his constituency on his way out.
Franken has been consistent in his support of privacy. Last year, he wrote to Tim Cook requesting clarification of Touch ID's details of implementation:
No, but it will certainly be rendered useless by a majority party which believes government should have no meaningful say in any decisions made by businesses.
It never will - Franken loses his chairmanship of the committee come January when the Republicans take power, which only serves to highlight that this "investigation" is merely him pandering to his constituency on his way out.