US Secretary of State Hillary Rodham Clinton is to meet Hungary's Prime Minister Viktor Orban on June 30 during a visit to Budapest, dpa quoted Hungarian officials as announcing Wednesday. Orban's spokesman told reporters in Oslo that Clinton would hold talks with Orban while visiting the Hungarian capital to take part in the inauguration of the Tom Lantos Institute, the Hungarian state news agency MTI reported. The institute, named after a Democrat Hungarian-American US congressman who died in 2008, aims to promote tolerance.