N.Y. Insurance Law § 6904
(b) Permissible guarantees. (1) The superintendent shall not permit the writing of financial guaranty insurance except as defined in subparagraph (A) of paragraph one of subsection (a) of section six thousand nine hundred one of this article, and a corporation may insure the timely payment of United States dollar debt instruments, or other monetary obligations, only in the following categories:
(i) such mortgages with loan-to-value ratios in excess of eighty percent are:
(4) A corporation may also write financial guaranty insurance as defined in subparagraph (A) of paragraph one of subsection (a) of section six thousand nine hundred one of this article to insure the timely payment of non-United States dollar debt instruments or other monetary obligations denominated or payable in foreign currency, only for the categories listed in subparagraphs (A) through (J) of paragraph one of this subsection, provided that:
(d) Single risk limits. A financial guaranty insurance corporation shall limit its exposure to loss on any one risk insured by policies providing financial guaranty insurance, net of collateral and reinsurance, as follows:
(1) for municipal obligation bonds, special revenue bonds, and obligations demonstrated to the satisfaction of the superintendent to be the functional equivalent thereof:
(2) for each issue of asset-backed securities issued by a single entity and for each pool of consumer debt obligations, the lesser of: