(Reuters) - When the Democrats take over the U.S. House of Representatives in January, they are expected to launch investigations of Donald Trump, his businesses, his family and his presidency, according to senior lawmakers and aides.

In choosing targets for inquiry in 2019-20, senior party leaders will be guided, in part, by 64 subpoena requests made by House Oversight Committee Democrats in 2016-18 that were blocked by Republicans then in power in the House.

Here is a partial summary of the 64 blocked subpoenas and the areas of interest they targeted.

TRUMP CONFLICTS OF INTEREST. Seeking documents from the Trump Organization about a pledge to donate to the U.S. Treasury any payments Trump’s business got from foreign governments.

RUSSIAN ELECTION MEDDLING. Demanding information about Russian interference in the 2016 U.S. presidential election and any possible collusion between Moscow and the Trump campaign.

KUSHNER PRIVATE EMAILS. Seeking documents on alleged use of private emails for official government business by Trump’s son-in-law and White House adviser Jared Kushner and others.

KUSHNER CONFLICTS OF INTEREST. Trying to force testimony by Kushner on his businesses and debts, his White House role and foreign countries’ and large banks’ involvement with him.

IMMIGRANT FAMILY SEPARATIONS. Seeking documents on the status of children forcibly separated from their parents under a Trump policy announced in April 2018.

CENSUS CITIZENSHIP QUESTION. Seeking testimony by Commerce Secretary Wilbur Ross on his effort to include a question about citizenship in the 2020 U.S. census.

SECURITY CLEARANCES. Requests for information about White House security clearances, the revoking of former CIA Director John Brennan’s clearance and the granting of a clearance to national security adviser John Bolton.

MEDICAID WORK REQUIREMENTS. Requesting documents and analyses on the impact on poor Americans of new work requirements under the Medicaid program in some states.

OBAMACARE WEBSITE SCRUB. Seeking answers about the removal from the Medicare.gov website of information about the Affordable Care Act, known widely as Obamacare.

OBAMACARE LEGAL STATUS. Seeking documents from the Justice Department on its position that parts of Obamacare are unconstitutional and its refusal to defend them in court.

HURRICANE RESPONSE. Seeking documents on the Trump administration’s handling of hurricane disasters in Puerto Rico and the U.S. Virgin Islands.