Four years after Democratic Senator Claire McCaskill co-sponsored legislation targeting tax havens such as the Cayman Islands, her husband began investing in a hedge fund registered in the Caribbean nation — an investment that has paid off handsomely.

The Kansas City Star reported Wednesday that Joseph Shepard has invested $1 million in Matrix Capital Management and that it has earned him between $230,000 and $2.1 million in income. The Star cited McCaskill’s financial disclosure forms, which only show a range of income.

Shepard declined the newspaper’s request for comment. He and McCaskill file their taxes separately.

McCaskill is running for re-election this year. Campaign spokeswoman Meira Bernstein told the Star that the senator has no involvement in her husband’s investments, and doesn’t consider his business interests when doing her job in the Senate.
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