The Presidential Office on Friday challenged opposition Democratic Progressive Party (DPP) Chairwoman Tsai Ing-wen to come up with its own economic strategy to deal with the crisis of Taiwan being marginalized. Presidential Office spokesman Lo Chih-chiang said Tsai has led the party for two years but has so far said nothing about how to address the crisis. If Tsai is opposed to a proposed cross-strait economic cooperation framework agreement (ECFA), she should clearly explain her 'constructive alternative,' Lo said. The spokesman wondered how Tsai would cope with the problem of lower tariffs on the trade of goods between other countries and China as free trade blocs and global free trade agreements take hold, hurting Taiwan's exports and contributing to its marginalization. Earlier in the day, Tsai criticized President Ma Ying-jeou for his insistence since 2008 that signing the agreement with China was a necessity and said that the opposition had yet to obtain any comprehensive information regarding its details. She asked to have access to the early harvest list proposed by the government, the draft of the agreement and government-commissioned ECFA assessment reports. But Lo said the request by the DPP for more information before a scheduled TV debate between Ma and Tsai April 25 was unwarranted, saying that all of the information has appeared in previous policy presentations and is open to everybody. President Ma has instructed the Mainland Affairs Council and the Ministry of Economic Affairs to provide the information. On the DPP's request for information on the ongoing negotiations, Lo said that Tsai, as an experienced negotiator, 'should know that if information from an ongoing negotiation is recklessly made public, the damage to the negotiating process will be great.' 