He got back in the batter's box Sunday in an interview with Bob Schieffer on "Face the Nation."
Walker didn't back down from calling President Ronald Reagan's strike-busting dismissal of air traffic controllers in 1981 the biggest foreign policy decision in his lifetime, a belief that earned a good amount of ribbing when delivered in February.
And when Schieffer asked what he would cite as his own foreign policy credentials, Walker — who has not yet officially announced his candidacy for the 2016 Republican presidential nomination — leaned toward leadership over specific examples.
"To me, in my lifetime, one of the best presidents when it comes to foreign policy was a governor from California. In my lifetime, one of the worst presidents when it comes to foreign policy was a freshman senator from Illinois," Walker said. "So I think it's not just about past experiences, it's about leadership.
"As a governor you have to put a cabinet in place and hopefully you pick people as smart or smarter than you on any given topic. I think that's something that's required of a successful president, putting people in place, be it Secretary of Defense, National Security Advisor, Secretary of State and others, and then having the good sense to listen to them and to others in the chain of command in the military, consulting with the Congress. All those sorts of things I think are important of a president, and I think successful governors in either party have to do that every single day, consult with people in their cabinet and act.
"The most beyond that as a governor, I've been just recently in Germany and Spain and France, earlier in the year it was the United Kingdom, on trade-related missions. A few years back in China and Japan. That's probably the most that any governor of either party has is that experience in terms of trade relations, and something I think is very important not just to our states, it's important to our country."
Walker said he'll "lay out a very clear plan for what we should do going forward" if he decides to enter the race, likely a formality after the state budget process is done next month.
In the meantime, he implied that his plans would differ from those of Democratic candidate Hillary Clinton, who was Secretary of State under President Barack Obama.
"I do think that if foreign policy plays an important role the contrast will be clear because just about everywhere Hillary Clinton has played a role with this president, under President Obama, that part of the world is largely a failure, a mess because of the policies that we've seen from Obama and Clinton," Walker said.
Watch the full interview here: