38 C.F.R. § 26.11
(b) VA's major Federal actions as defined in section 111(10) of NEPA (42 U.S.C. 4336e(10)) are subject to NEPA. In this part, VA actions refer to actions for which VA is the decision-maker (see § 26.12 for definition of decision-maker).
(1) This part applies to all VA major Federal actions. VA anticipates, on the basis of its experience, that the following types of actions are generally “major”:
(2) VA will determine that NEPA does not apply to a proposed action when:
(vi) The proposed action is not a “major Federal action.” The terms “major” and “Federal action,” each have independent force. NEPA applies only when both of these two criteria are met. Such a determination is inherently bound up in the facts and circumstances of each individual situation, and is thus reserved to the judgment of VA in each instance. NEPA does not apply to “non-Federal actions.” Therefore, under section 111(10)(B)(i) of NEPA, NEPA does not apply to actions with no or minimal Federal funding, or with no or minimal Federal involvement where a Federal agency cannot control the outcome of the project (42 U.S.C. 4336e(10)(B)(i)). A “but-for” causal relationship is insufficient to make an agency responsible for a particular action under NEPA. By the same token, minimal Federal funding or involvement, which may in a causal sense be a “but-for” cause of an action, does not by itself convert that action into a Federal action within the meaning of the language of the statute. VA has determined that the following non-exhaustive list of VA activities or decisions are not subject to NEPA because they presumptively do not meet the definition of a “major Federal action”: