Palestinians view Pompeo visit as 'dangerous precedent'
The visit planned for next week is a way to "legitimise the settlements" and creates "a dangerous precedent that violates international law", Shtayyeh said, quoted by the Palestinian news agency WAFA.
Pompeo's visit to Israel comes exactly one year after he said the US did not consider Jewish settlements on occupied Palestinian territory to be illegal, putting Washington at odds with UN Security Council resolutions.
The winery has unsuccessfully challenged a European decision to put a label on all products that come from West Bank settlements.
The State Department has not confirmed Pompeo's itinerary.
In a statement earlier this week, it said only that he would visit Israel and meet with Prime Minister Benjamin Netanyahu.
Pompeo's trip comes two months before the inauguration of President-elect Joe Biden, a past critic of settlements.
Pompeo has made little secret of his aspirations for higher office and has frequently pointed to his support of Israel, a major cause for his Republican Party's evangelical Christian base.
About 450,000 Jewish settlers live alongside around 2.8 million Palestinians in the West Bank, which Israel has occupied since 1967.