Like the president, Republicans maintain that the Democratic investigation is a sham meant to overturn the 2016 election, with evidence cherry-picked by the lead investigator, House Intelligence Committee Chairman Adam Schiff.
The chairman's interest in that thread, which also has involved litigation by the House against Trump and the Justice Department involving evidence from Mueller and other matters, may mean the question isn't settled as to whether Nadler might favor a broad indictment of Trump that takes elements from the Russian Federation investigation - or focuses closely on Schiff's report.
Meanwhile, the House Intelligence Committee released a 300-page report on Tuesday outlining evidence against President Trump, stating that he placed his political interests above national interests in his conduct toward Ukraine.
The vote on the Intelligence Committee report signals a shift in the impeachment process from that committee to the Judiciary Committee.
Based on two months of investigation sparked by a still-anonymous government whistleblower's complaint, the report relies heavily on testimony from current and former USA officials who defied White House orders not to appear.
The committee based the report on weeks of private and public testimony from more than a dozen diplomats and other officials, which led Democrats to the conclusion that there is sufficient evidence to suggest the Trump administration threatened to withhold $250 million in congressionally approved military aid to Ukraine in exchange for investigations of Democratic presidential candidate Joe Biden and his son Hunter Biden by the government in Kiev. "In doing so, the President placed his own personal and political interests above the national interests of the United States, sought to undermine the integrity of the USA presidential election process, and endangered U.S. national security". The focus of the Judiciary hearing is to define grounds for a presidential impeachment.
The Intelligence Committee's Republicans, led by Rep. Devin Nunes, R-Calif., released a minority report on Monday defending Trump in the Ukraine matter and accusing Democrats of simple political animus.
Trump, who is in London for a North Atlantic Treaty Organisation summit, repeated accusations that Democrats are using the impeachment process to engage in a politically-motivated attack seeking to undo the results of the 2016 presidential election by removing him from office.
The White House and congressional Republicans have rejected the Democratic allegations.
The Democratic report is based largely on the 17 witness interviews that were conducted over the past several months, including 12 at two weeks of public hearings, with testimony that detailed a lengthy effort spearheaded by the President's personal attorney Rudy Giuliani to oust the U.S. ambassador to Ukraine and then push Kiev to announce investigations into the President's political rivals.
"I think you may find moderate Democrats voting against the article for abuse of power, but for the article for obstruction where there is clear evidence that there's been no document production, for example".
Nadler and Democrats can see what's ahead for this process the same as anyone.
The Point: The impeachment hearings are back, but this will be an entirely different show. But impeachment is worth doing, they've argued, because it sends a message about what Congress will not tolerate and it forces senators to go on the record defending Trump's actions in the Ukraine affair. And, they've failed many times before.