Speaking to Al-Manar TV, Sousan said the move by Pompeo was tantamount to challenging international laws and UNSC resolutions.
The US administration implements the Zionist regime’s policies in the region, he said.
The Syrian official underlined that Golan belongs to the Arab country and there is international consensus against the US move to recognize its annexation by the Zionist regime.
Pompeo arrived in Tel Aviv on Wednesday for his last trip to the occupied lands before leaving office in January.
He paid a visit to the occupied Golan Heights during the trip.
Syria appealed to the United Nations to condemn the provocative visit, calling it “a flagrant violation” of Syrian sovereignty.
Israel seized the Golan Heights from Syria in the closing stages of its 1967 Six-Day War with Arab countries, which also saw the regime occupy the Palestinian territories of the West Bank, East Jerusalem al-Quds and the Gaza Strip.
Tel Aviv unilaterally annexed the Golan Heights in 1981 in a move not recognized internationally.
Damascus has repeatedly reaffirmed its sovereignty over the Golan Heights, saying the territory must be completely restored to its control.
In March 2019, US President Donald Trump signed a decree recognizing Israeli “sovereignty” over the occupied Golan during a meeting with Netanyahu in Washington.