Question: Is there an expiration date on impeachment?

[OmahaBlueDog]

With the General Election and the Innaguration now less than a year away, logic dictates that, at some point, the idea of investing the time to impeach will fail the cost benefit test. While I know what someone like David Swanson will say, I'm curious what others think.

Is it already too late to do any good?

Is it not worth it unless it could be done by, for example, the end of summer?

Is it a symbolic measure that should be pursued up to the last moment in office?