My comment:
(a) The sad thing is Legislative Yuan 立法院 does not a transcript or video of the proceeding, though it has live casting.
(b) No news report in Taiwan on this issue is detailed enough to present nuances. But a report from a news organization based in Hong Kong suggests the lawmaker in quotation (b) is none other than 江启臣, See
黃筱筠, 若美國要強力在台部署薩德 鄭德美:再評估. 中評社, Apr 5, 2017. http://hk.crntt.com/doc/1046/3/4 ... mp;mdate=0405111625