Complex sentence: He founded the Foundation for Moral Law, a non-profit legal organization from which he collected more than $1 million over five years, though he did not disclose everything he received on the tax filings.
Split into simpler sentences: He founded the Foundation for Moral Law, a non-profit legal organization from which he collected more than $1 million over five years. However, he did not disclose everything he received on the tax filings.