Schumer is on to #11. He says it's the last one.
52-48 vote to table the amendment, with one Republican crossing over for the first time.
Schumer goes for amendment #10, which seems to be a technicality on timing of motions and responses. It would seem we're wrapping up for the day(s). Schiff says, "I would hope we could at least agree on this."
At 1:18 am, another 53-47 vote rejects amendment #9. All party line votes.
Schumer introduces another amendment, his 9th. This one goes up for a vote quickly, after brief comments from both sides.
At 1:03 am Wednesday, another 53-47 vote rejects the amendment re: Bolton subpoena.
Tempers flared in the midnight hour. After impeachment manager Rep. Jerry Nadler accused Republican senators of taking part in a cover-up led by the President, adding that only guilty people cover up evidence. Attorney Cipollone demanded Nadler apologize to the President. For the first time, presiding Chief Justice John Roberts offers a comment outside the routine, admonishing both sides to watch their language and tone while arguing before the Senate, saying they should "remember where they are."
It's been about three hours since White House counsel Cipollone asked for an escape hatch from Amendmentville, referring to opening arguments, set for... later today: "Seriously. Can we please start?"
At 12:02 am Wednesday, Sen. Schumer introduces an amendment to subpoena former National Security Advisor John Bolton.
Another 53-47 vote to table a Democratic amendment.
Decrying Democratic tactics, Trump attorney Sekulow says he wonders if this is a trial or not. Rep. Schiff responds, "The defendant doesn't get to decide who the prosecution can call as a witness. If you're confused, well so is the public. They want this to look like a regular trial, and it should."
At 11:19 pm, Sen. Schumer introduces another amendment. At 11:20, Sen. McConnell calls for a 5 min. recess.
Another 53-47 vote tabling the Blair/Duffy subpoena.
Senator Richard Blumenthal (D/CT), earlier: "All senators should want to see these documents & hear from key witnesses who were in the room. A full, fair proceeding means providing this evidence."
Another 53-47 party line vote tables the Defense Dept. subpoena. Sen. Schumer introduces an amendment to subpoena White House officials Robert Blair and Michael Duffy.
The latest Democratic amendment would subpoena Defense Department records.
At roughly 9:45 pm, Democrats did not agree to a McConnell request to "stack votes" so senators could have some idea when they're going home. They still don't know when they're going home, with a CBS News producer describing them as looking "haggard."
As of 8:20 pm, the Senate is considering another amendment. It would subpoena Acting Chief of Staff Mick Mulvaney.
Senator Chris Murphy (D/CT) to CNN: "Tonight is our only chance to have individual votes on some of the most important documents that the White House has been holding secret, and some of the most important testimony that could fill in some of the gaps that apparently still exist in many Republicans' minds."
Republicans have succeed in rejecting three Democratic amendments, all calling for subpoenas of Executive Branch documents, all by party line 53-47 votes.
Just after 6 pm, attorney Sekulow states his case for a wide interpretation of executive privilege, protecting all documents the President deems privileged.
Democrats, led by impeachment manager Rep. Val Demings (D/FL), argue for a second Schumer amendment, which would subpoena papers from the State Dept.
In a full Senate vote at roughly 4:40 pm, amendment to Sen. Mitch McDonnell's trial rules, proposed by Sen. Charles Schumer (D/NY). was rejected. Party line vote, 53-47. CT Senators, both Democrats, voted for the amendment, which would have subpoenaed documents from the White House.
LOFGREN: "The Senate can remedy President Trump's unprecedented cover-up by taking a straightforward step. It can ask for the key evidence that the president has improperly blocked."
At roughly 3:30 pm, House impeachment manager Rep. Zoe Lofgren (D/CA) took the floor, reviewing relevant U.S. impeachment history.
SCHIFF: "When you hear them attack the House managers, what you're really hearing is, 'we don't want to talk about the president's guilt.'"
Late afternoon arguments began at about 3:15 pm, with impeachment manager Rep. Adam Schiff (D/CA) replying to White House attorneys Cipollone and Sekulow.
SEKULOW: "Why are we here? Are we here because of a phone call? Or are we here, before this great body, because since the President was sworn into office there was a desire to see him removed?"
Before a mid-afternoon recess, White House attorneys Jay Sekulow and Pat Cipollone tore into the House case.
Democrats had objected strongly to the Republican leader's call for compressed arguments and a speedy trial, and some Republicans also reportedly objected, forcing McConnell's hand.
The afternoon began with a last-minute easing of proposed rules from Senate Majority Leader Mitch McConnell (R/KY). He is now offering three days, rather than two, for opening arguments. He will also allow evidence from the House impeachment inquiry to be entered into the Senate trial record.
In Davos, Switzerland, Trump said again that the whole thing is a hoax, and it would "work out fine."