PORTLAND, Maine — Maine’s Congressional delegation has declined to release copies of its members’ 2015 tax records to a newspaper.

The Portland Press Herald reports (http://bit.ly/2dk7dLP ) that Congress issued a joint statement saying the members’ federally required financial disclosures provide enough transparency.

Republican Sen. Susan Collins and Independent Sen. Angus King aren’t up for re-election, while Democratic Rep. Chellie Pingree and Republican Rep. Bruce Poliquin face opponents this fall.

The delegation stated its disclosures include information about sources of income, properties, investments and mortgages.

The newspaper said the disclosures provide “limited” income information and exclude details like tax deductions or charitable contributions.

King’s spokesman said the senator would release his tax return when he runs for re-election.

Poliquin’s opponent, former Democratic state Sen. Emily Cain, shared her 2015 tax returns with the newspaper.