On June 27, the Supreme Court ruled the administration's plan to add a citizenship question to the census violated federal law and that its purported rationale for adding the question was "contrived," "cannot be adequately explained," and "does not match the explanation the secretary gave for his decision."
» FROM JUNE: Supreme Court puts plans for 2020 census citizenship question on hold
Trump gave up on his effort to add a citizenship question a few weeks later.
The House voted in July to hold Barr and Ross in contempt for refusing to produce documents under the committee's subpoenas.
Despite the Supreme Court ruling and the House contempt vote, Barr and Ross have continued to refuse to produce any additional documents in response to the subpoenas over the past four months.
Congressional Democrats have said they are looking for evidence the Trump administration's bid to include the citizenship question was designed to suppress census responses from immigrants and noncitizens. Cutting the population count could have reduced congressional seats, Electoral College clout and federal funding for some states.
The 2020 census begins in Alaska in January and across the rest of the country in April.