From the moment he assumed the office, President Donald Trump has been in direct violation of the US Constitution. The President is not above the law.
On December 5, Speaker Pelosi authorized the Judiciary Committee to begin drafting articles of impeachment
On December 10, 2019, Democrats on the House Judiciary Committee announced that they would levy two articles of impeachment, designated H. Res. 755: (1) abuse of power, and (2) obstruction of Congress, in its investigation of the President's conduct regarding Ukraine.
https://en.wikipedia.org/wiki/Impeachment_of_Donald_Trump#Impeachment
For the third time in history, the House has voted to impeach the president of the United States. On December 18th, 2019, the House voted to pass both of its two articles of impeachment brought against President Donald Trump.
The first — one charging the president with abusing his power — passed 230-197, with two Democrats voting no. Democratic presidential hopeful Tulsi Gabbard voted present.
The second article the House adopted accuses Trump of obstructing Congress. The final vote was 229-198, with three Democrats voting no and Gabbard again voting present. Both are tied to the Ukraine scandal and Trump’s urging of the Ukrainian president to investigate his political rival, former Vice President Joe Biden, and his son, Hunter.