To the extent permitted under federal law and subject to sub. (2), from the appropriation under s. 20.437 (2) (md) the department may distribute funds to the Wisconsin Trust Account Foundation in an amount up to the amount received by the foundation from private donations, but not to exceed $100,000 in a fiscal year. Except as provided in sub. (4), funds distributed under this subsection may be used only for the provision of legal services to individuals who are eligible for temporary assistance for needy families under 42 USC 601 et seq. and whose incomes are at or below 200 percent of the poverty line.