My findings so far are:
It does appear to be against public policy at least in California and Oregon.
In California outlawed statutorily — Ins. Code § 533 provides:
“An insurer is not liable for a loss caused by the wilful act of the insured; but he is not exonerated by the negligence of the insured, or of the insured’s agents or others.”
Also on point is Civ. Code, § 1668:
“All contracts which have for their object, directly or indirectly, to exempt anyone from responsibility for his own fraud, or willful injury to the person or property of another, or violation of law, whether willful or negligent, are against the policy of the law."
Affirmed, for e.g., in Tomerlin v. Canadian Indem. Co., 61 Cal.2d 638, 39 Cal. Rptr. 731, 394 P.2d 571 (Cal. 1964)
“[A]n insurer may not indemnify against liability caused by the insured's wilful wrong (Civ. Code, § 1668; Ins. Code, § 533; see, e.g., Abbott v. Western Nat. Indem. Co.Abbott v. Western Nat. Indem. Co. (1958) 165 Cal.App.2d 302, 305 [ 331 P.2d 997])”
In Oregon, Outlawed by case law:
“Despite variations in the language of the policies, this court has interpreted various policy provisions excluding insurance coverage for intentionally-caused injuries similarly. [...] For an exclusion from insurance coverage for intentional conduct to apply, "[i]t is not sufficient that the insured's intentional, albeit unlawful, acts have resulted in unintended harm; the acts must have been committed for the purpose of inflicting the injury and harm before either a policy provision excluding intentional harm applies or the public policy against insurability attaches." [Citation.]” Ledford v. Gutoski, 319 Or. 397, 877 P.2d 80 (Or. 1994)