At least 14 Democratic-led House committees have been investigating various aspects of President Donald Trump's businesses, campaign and his presidency since the beginning of this year, an NBC News review shows. In all, those committees have launched at least 50 probes into Trump world.

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HOUSE INVESTIGATIONS

JUDICIARY: Chairman Jerrold Nadler, D-N.Y.

Oversight of the administration's family separation policy <<<<--------------
Former acting Attorney General Matthew Whitaker’s appointment, his involvement in the Mueller investigation, and his conversations with Trump and involvement with World Patent Marketing
Voting rights and Department of Justice actions on voter ID, census cases
Easing of sanctions on companies linked to Russian oligarch Oleg Deripaska
Trump's national emergency declaration
The president's "threats to the rule of law," covering three main areas:
Obstruction of justice, including the possibility of interference by Trump and others in a number of criminal investigations and other official proceedings, as well as the alleged cover-up of violations of the law;
Public corruption, including potential violations of the Emoluments Clause of the U.S. Constitution, conspiracy to violate federal campaign and financial reporting laws, and other criminal misuses of official positions for personal gain;
Abuses of power, including attacks on the press, the judiciary, and law enforcement agencies; misuse of the pardon power and other presidential authorities; and attempts to misuse the power of the office of the presidency.
Trump's interference in Time Warner merger
Threats to relocate migrants to sanctuary cities
Reports that the president said he would pardon acting Department of Homeland Security Secretary Kevin McAleenan if he illegally closed the southern border to migrants
Firings of senior leadership at DHS
The administration's decision to stop defending the Affordable Care Act in court


OVERSIGHT AND REFORM: Chairman Elijah Cummings, D-Md. [added by me -- now Carolyn B. Maloney]

Oversight of the Trump administration’s family separation policy
Acting Attorney General Matthew Whitaker's involvement with World Patent Marketing
Reports that the Citizenship and Immigration Services Ombudsman was failing failing to carry out statutory duties to help those applying for legal immigration programs
White House security clearances
Inclusion of a citizenship question on the 2020 census
Easing of sanctions on companies linked to Russian oligarch Oleg Deripaska
Delayed back pay for federal workers impacted by the government shutdown
Michael Cohen hush-money payments
Education Secretary Betsy DeVos' efforts to replace her agency's acting inspector general
Transfer of nuclear technology to Saudi Arabia
Child separation actions at DOJ, DHS and Health and Human Services
Communications between Russian President Vladimir Putin and Trump
Michael Cohen's claims that Trump was improperly inflating financial statements
Interior Secretary David Bernhardt's schedules
Trump's threats to relocate migrants to sanctuary cities
Use of private email accounts by Jared Kushner, Ivanka Trump and other White House officials, and use of messaging apps like WhatsApp
Gag orders on White House staff
Title X gag rule regulatory review process
Potential lobbying conflicts of interest involving Environmental Protection Agency head Andrew Wheeler
Interior Department's handling of FOIA requests
Abandoning plan to move FBI HQ building from Washington to suburban location
Firings of senior leadership at DHS
Trump Administration’s response to hurricanes in Puerto Rico and U.S. Virgin Islands
Trump Administration’s decision to stop defending ACA


INTELLIGENCE: Chairman Adam Schiff, D-Calif.

Russia investigation, including the scope and scale of the Russian government's operations to influence the U.S. political process, and the U.S. government's response, the extent of any links and/or coordination between the Russian government, or related foreign actors, and individuals associated with Trump's campaign, transition, administration or business interests, whether any foreign actor has sought to compromise or holds leverage, financial or otherwise, over Trump, his family, his business, or his associates; whether Trump, his family, or his associates are or were at any time at heightened risk of, or vulnerable to, foreign exploitation; and whether any actors — foreign or domestic — sought or are seeking to impede, obstruct, and/or mislead authorized investigations into these matters
Whether lawyers for Trump and his family obstructed committee's Russia probe
Trump's personal finances, including loans from Deutsche Bank
Use of intelligence to justify building a wall at the southern border
Easing of sanctions on companies linked to Russian oligarch Oleg Deripaska
Communications between Putin and Trump


WAYS AND MEANS: Chairman Richard Neal, D-Mass.

Easing of sanctions on companies linked to Russian oligarch Oleg Deripaska
Trump administration's use of user fees generated by the Affordable Care Act
Rule on short-term insurance plans
Trump administration’s decision to stop defending ACA
The president's personal and business tax returns


ENERGY & COMMERCE: Chairman Frank Pallone, D-N.J.

Short-term insurance plans
How the administration is spending user fees generated by the ACA
How HHS is caring for children impacted by the Trump family separation policy
EPA clean air rollbacks
EPA political appointees blocking release of a chemical study
EPA rollback of policies that reduce greenhouse gas emissions to address climate change
EPA political appointee steering litigation to benefit former client
EPA Officials ties to Utility Air Regulator Group
Trump Administration’s decision to stop defending ACA


FOREIGN AFFAIRS: Chairman Eliot Engel, D-N.Y.

Communications between Putin and Trump
Trump administration's failure to produce Russian sanctions report


FINANCIAL SERVICES: Chairwoman Maxine Waters, D-Calif.

Easing of sanctions on companies linked to Russian oligarch Oleg Deripaska
Trump's personal finances, including loans from Deutsche Bank
Trump administration's failure to produce Russian sanctions report
Reported ransom demand from North Korean government related to Otto Warmbier


HOMELAND SECURITY: Chairman Bennie Thompson, D-Miss.

Easing of sanctions on companies linked to Russian oligarch Oleg Deripaska
Administration's border security policies
Investigation into Trump threats to relocate migrants to sanctuary cities
HUD disbursement of Puerto Rico disaster relief funds
Firings of senior leadership at DHS
Reports of ICE tracking Trump protesters


NATURAL RESOURCES: Chairman Raul Grijalva, D-Ariz.

HUD disbursement of Puerto Rico disaster relief funds
Interior Secretary David Bernhardt's schedules
Agriculture/Interior Department decisions to further construction of a copper sulfite mine in Minnesota


VETERANS' AFFAIRS: Chairman Mark Takano, D-Calif.

Travel expenses of a political appointee in the Department of Veterans Affairs
Potential influence of several Mar-a-Lago members on VA decisions


EDUCATION AND LABOR: Chairman Bobby Scott, D-Va.

DeVos's efforts to replace the acting inspector general
Administration's decision to rescind Obama-era guidance on school discipline
Trump administration’s use of user fees generated by the Affordable Care Act
Trump administration’s decision to stop defending ACA


TRANSPORTATION AND INFRASTRUCTURE: Chairman Peter DeFazio, D-Ore.

Trump Hotel lease of Old Post Office building
Abandoning plan to move FBI headquarters from Washington to suburban location


APPROPRIATIONS: Chairwoman Nita Lowey, D-N.Y.

Use of Pentagon funds for border wall
National emergency declaration and border wall funds


BUDGET: Chairman John Yarmuth, D-Ky.

National emergency declaration and border wall funds