What keeps us from the snares of parliamentary government is the principle of the separation of powers. The president has broad powers to act as he/she sees fit - with some limitations of course but undefined. That is the dynamic of establishing balance of power in such a system (NOT intended to be strictly democratic!)
What the Dem House is doing is canceling the president's prerogative to appeal to the courts to protect executive privilege - thus eliminating such protection of executive power. The impeachment article of 'Obstruction of Congress' (which is not a stated Constitutional principle) attempts to nullify the recent SCOTUS decision to review Prez Trump's challenge to having to release his financial records; the whole system of checks and balances is thrown in to a cocked hat!
What the Dem House is doing is attempting to ensnare POTUS as a servant of a House majority thus establishing a parliamentary system under our Constitution - likely an untenable political position.
In my view the White House should bypass the Senate altogether! If the House passes the Articles of Impeachment the WH should appeal directly to SCOTUS on the grounds of those articles eliminating our Constitutional form of government.
The libtards have destroyed the country...and thats a good thing. We cant just throw them out of THIS country. We can The NEXT one.
Majority Leader McConnell has asserted that Nancys threat to hold back notification to the Senate is no threat at all, inasmuch as the Senate never wanted that notification in the first place.So in that sense its no skin off the Senates nose if it never receives notice from the House that the Senate has to judge an impeachment.
Problem is, SCOTUS probably feels the same way. The inducement I see for Justice Roberts to take Trumps side against Nancy is simple - Article II of the impeachment presumes to deny SCOTUS the right to grant cert of President Trumps appeal. Something which SCOTUS had already done when the House presumptuously denied SCOTUS right to do so by passing Article II.