Former Taiwan President Ma Ying-Jeou at a news conference at the presidential palace in Taipei, Taiwan, on Monday, May 18, 2015. A travel ban preventing him from visiting China-backed Hong Kong by the new government has drawn the ire of the opposition party, calling the ban "surppressive".

Taiwan's opposition Nationalist Party slammed the island's new government as "suppressive" for barring former president Ma Ying-jeou from travelling to Chinese-controlled Hong Kong on the grounds of national security.

Ma's China-friendly Nationalists lost landslide elections in January to President Tsai Ing-wen and her Democratic Progressive Party (DPP), which has traditionally leant towards independence from China.