He did to what it was the NDC before. The NDC can formulate policy proposals, as it did, and submit to the relevant agencies for the various regulations, but ultimately the competent agency can just ignore as it is not constitutionally required to pursue.
The Control Yuan is a constitutionally established organ who has investigative and remedial and censure powers clearly enunciated in the control yuan act, the enforcement rules of the control yuan act and the constitution itself (cap. IX) and the Additional Article. If they find that a people’s complaint is substantiated and after gathering evidence from the competent agencies they rule that the competent agency must take remedial action, the agency is compelled to comply or they will be requested to appear if front to the control yuan for further disciplinary actions.