He lashed out at the DPP for creating cross-strait tension in pursuit of its own "political interests."
Su also criticized China, however, for failing to be more flexible in seeking to resolve the cross-strait problem.
No matter how many preferential packages Beijing showers on Taiwanese businesspeople, China will never ease the resentment harbored by the majority of Taiwanese as long as it continues to keep Taiwan out of the international community, he said.
"The KMT is trying to play a steadying force in the Asia-Pacific region. Such a motivation should not be misinterpreted as an intention to sell out Taiwan. The accusations are unfair," Su said.
KMT presidential candidate Ma Ying-jeou (馬英九) joined Su in defending the party's proposed referendum.
Ma argued that the US was opposed to the DPP plan because the DPP had made the proposal simply for electoral purposes. Additional reporting by AFP AND STAFF REPORTERS
Shih Hsiu-chuan, Mo Yan-chih, Flora Wang and Ko Shu-ling
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