It is a common refrain, mostly on the political right, that considering environmental, social, and governance (“ESG”) factors when investing is probably illegal.[1] The basis for this argument derives from the fiduciary duty of loyalty and its corollary, the “sole interest” or “exclusive benefit” rule, enshrined in both federal and state law, which prohibits fiduciaries from investing for any purpose other than the financial well-being of the beneficiary. [read post]