Barabak: The Senate is a mess. Jeff Merkley wants to fix it, from the inside.

To say the U.S. Senate has grown dysfunctional is like suggesting water is wet or the nighttime sky is dark.

The institution that fancies itself “the world’s greatest deliberative body” is supposed to serve as a cooling saucer that tempers the more hotheaded House, applying weight and wisdom as it addresses the Great Issues of Our Time. Instead, it’s devolved into an unsightly mess of gridlock and partisan hackery.

Part of that is owing to the filibuster, one of the Senate’s most distinctive features...