More than two decades after his investigation of former President Bill Clinton, Ken Starr while defending President Trump on Monday asked how it is we came to live in the "age of impeachment."

The former independent counsel spoke as part of Trump's legal defense team during the Senate's impeachment trial, making the argument that presidential impeachments are being invoked too often in recent years.

"The Senate is being called to sit as the high court of impeachment all too frequently," Starr said. "Indeed, we're living in what I think can be aptly be described as the age of impeachment. ... How did we get here?"

Starr went on to decry the fact that impeachment has become not a "once in a century phenomenon" but rather a "weapon to be wielded against one's political opponent." He added the Senate should return to a time when "impeachment was truly a measure of last resort."

Given Starr's role in the last presidential impeachment, CNN's John Avlon asked "who thought that Ken Starr was the best choice to make the case for bipartisan process and against impeachment," while MSNBC's Garrett Haake observed, "Ken Starr, arguing against overly-political, thinly-predicated impeachment is enough to make a certain generation of Democrats' heads explode." Brendan Morrow