ZAGREB, June 13 (Hina) - Serbian Prime Minister Aleksandar Vucic, who is also the PM-designate with the mandate to form the country's new government after a snap election held in April, has cancelled his visit to Brussels, scheduled for June 21, as well as his previously scheduled bilateral meetings with senior US officials and will travel to the USA on June 23 aboard the first direct Air Serbia flight from Belgrade to New York, the Politika daily said on Monday, quoting well-informed sources close to Vucic.