It feels a little like keeping the filibuster around: maybe technically it’s within their power to change the norm, but once unilaterally spilling secrets becomes The Done Thing, it’s hard to imagine it wouldn’t spin out into a free-for-all.
For all the mud that gets slung around, I think congresspeople really don’t get there without some kind of patriotic instinct, some kind of interest in the United States’ ongoing functioning. And I certainly can’t imagine they’d keep getting access to new secrets after pulling something like that, one way or the other…
[0] https://en.wikipedia.org/wiki/Gang_of_Eight_(intelligence)