The content of the document is available on the website of the intelligence committee of the House of Representatives.
“President Trump has publicly attacked and threatened witnesses who volunteered to obey the lawfully issued subpoenas and testify about their improper performance of duties,” the brief retelling of the report says.
The report also notes that "Trump is the first president in US history to try to completely impede the impeachment investigation."
In addition, it is reported that “Trump, personally or through agents in and outside the US government, incited the foreign government, Ukraine, to intervene in order to benefit for his re-election.”
Trump said earlier that he would have been pleased to hear speeches by US Secretary of State Mike Pompeo and US Secretary of Energy Rick Perry at congressional hearings on the impeachment process.