Wisconsin Gov. Scott Walker talks with attendees before speaking at a South Carolina Republican Party barbecue dinner in Greenville on March 19. (Jabin Botsford/The Washington Post)

This post has been updated.

GREENVILLE, S.C. -- Scott Walker is headed to Israel for the first time as part of a crash-course in foreign policy ahead of a likely run for president.

The Wisconsin governor has repeatedly said that the United States is not doing enough to support Israel as an ally -- a message that received a standing ovation at the Freedom Summit in Greenville on Saturday morning, a forum for declared and likely Republican presidential contenders where foreign policy often dominates. Walker told the crowd that later in the day he and his wife, Tonette, will travel to Israel to learn about the country and meet with Israeli Prime Minister Benjamin Netanyahu.

Details of the Walker's trip have long been a mystery, and reporters are not allowed to tag along. Walker's political organization, Our American Revival, has described the multi-day trip as a "listening tour," that will include meetings with "leaders at the highest levels of government" and a "variety of Israeli and Palestinian entrepreneurs," plus take a helicopter tour and visit religious sites.

The Republican Jewish Coalition -- whose board includes casino magnate Sheldon Adelson and other major donors -- is paying for part of the trip. Our American Revival will foot the rest of the bill.

Walker has at times struggled in discussing foreign policy, drawing criticism for changing his stance on immigration and comparing Islamic State terrorists to protesters from labor unions in Wisconsin. In South Carolina on Saturday, Walker declined to tell reporters who is advising him on issues related to Israel or what he hopes to learn on his trip. He promised to provide an update when he returns to the United States on Thursday.

"Really, for us though, we wanted to make it an educational focus, not just a media trip," Walker said.

Wisconsin Gov. Scott Walker, a potential Republican presidential candidate, slams Obama on his foreign policy at the South Carolina Freedom Summit. (Reuters)