"The United States Senate, right now, on June 12, is becoming a body where, well, we'll do what we can do, but my gosh, if the president gets upset with us, then we might not be in the majority", Corker said. "And all my amendment would do is say, 'Look, Mr. President, you go negotiate, but when you finish, come back, and as senators and as House members, let us vote up or down'".
"I was asked to find a solution to this "blue slip" issue, and I found one that's used as customarily as waking up in the morning and drinking a cup of coffee".
Rubio's tweet - which came while President Trump is lavishing praise on the North Korean dictator as "a strong guy" with "a very good personality" who is "very strategic" and "very impressive" - piqued Fox News host Sandra Smith, who pointed out to him, "the president, he sits down with Sean Hannity, he's talking about Kim Jong Un as someone who appeared to be amusing, he's smart, the president has said of him".
"I can't believe it!"
Authors of the legislation, which also include Democratic Senator Heidi Heitkamp of North Dakota, said Trump abused the authority granted under a 1962 law by imposing tariffs on aluminum and steel imports because there isn't a genuine national security threat.
"We're in a odd place", Corker said.
"A lot of people who want to put things that are non-germane and very often controversial", he said. "They want someone who's going to be like my father, and fight, and actually want to win".
"I don't want to do anything that is either going to jeopardize the passage of the defense authorization bill or delay the passage", said Sen.
Corker, a Tennessee lawmaker who is retiring in January, is increasingly open about his frustrations with Trump's trade and other policies.
On "Fox News @ Night", conservative columnist Bethany Mandel said Corker has a point about many Republicans being afraid to run afoul of Trump.
"He continued: "'We might poke the bear!' is the language I've been hearing in the hallways.
While Trump Jr. was trying to downplay the significance of Corker's remarks about how the GOP is in "a unusual place" because "it is becoming a cultish thing... as it relates to a president that happens to be of purportedly the same party", Rep. Mark Sanford (R-SC) was on MSNBC sounding the alarm about the state of his party.