; (2) in limiting emissions as described in paragraph (1), to consider the collateral benefits of limiting the emissions because of greenhouse gas effects; (3) to limit the emission of any other pollutant that is not a greenhouse gas that the Administrator determines by rule has heat-trapping properties; or (4) to take any action with respect to any greenhouse gas other than limiting its emission, including— (A) monitoring, reporting, and record-keeping requirements; (B) conducting or supporting investigations