Israel prevented Hugh Lanning, the chairman of Britain’s Palestine Solidarity Campaign (PSC), from entering the country Sunday. The move was the first public use of a law passed last week that permits the barring of anti-Israel boycott advocates. Israel’s Population and Immigration Authority and the Ministry of Public Security said they decided to ban Lanning because of his efforts to propagate the boycott of Israel. The joint statement said the PSC was operating against Israel, seeking to delegitimize the country. It also said he had met with top Hamas officials in the Gaza Strip in 2012.