The letter basically states that any agreement the President makes will be subject to congressional approval and should not be considered binding until then. Some leftists have accused those who signed it of treason, and claim they are in violation of the Logan Act. Hawkish interventionists, on the other hand, have praised the signers as heroes.

For the purpose of this essay, I am most interested in how conservative and libertarian non-interventionists who were/are inclined to support Rand Paul view his signing of the letter. My reading is that there is widespread disappointment. Justin Raimondo, who runs the website Antiwar.com and is a significant figure on the antiwar right, had been generally supportive of Paul, but this move has caused Raimondo to essentially throw Paul under the bus. He calls it Rand Paul's "Munich" and claims it proves Paul lacks the "character" necessary to be President.

Matt Purple, a contributor at Rare.us, calls it a "step too far" for Rand. This is significant because Rare, which is edited by former Rand Paul staffer Jack Hunter, generally fawns over Rand Paul.