Night falls on the Capitol, in Washington, Wednesday evening, Jan. 22, 2020, during in the impeachment trial of President Donald Trump. House prosecutors are outlining what they refer to as President Donald Trump's “corrupt scheme” to abuse power and obstruct Congress as they open six days of arguments in his impeachment trial. (AP Photo/J. Scott Applewhite)

Night falls on the Capitol, in Washington, Wednesday evening, Jan. 22, 2020, during in the impeachment trial of President Donald Trump. House prosecutors are outlining what they refer to as President Donald Trump's “corrupt scheme” to abuse power and obstruct Congress as they open six days of arguments in his impeachment trial. (AP Photo/J. Scott Applewhite)

WASHINGTON (AP) — So much for the Senate’s quaint rules and tradition.

Almost immediately after Chief Justice John Roberts gaveled in Wednesday’s session of President Donald Trump’s impeachment trial , bored and weary senators started openly flouting some basic guidelines in a chamber that prizes decorum.

A Democrat in the back row leaned on his right arm, covered his eyes and stayed that way for nearly a half-hour. Some openly snickered when lead prosecutor Adam Schiff said he’d only speak for 10 minutes. And when one of the freshman House prosecutors stood to speak, many of the senator-jurors bolted for the cloak rooms, where their phones are stored.

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“I do see the members moving and taking a break,” observed freshman Rep. Jason Crow of Colorado, one of the House prosecutors, in mid-speech at the center podium. “I probably have another 15 minutes.”

The agony of the senator-jurors had begun to show the night before, with widespread but more subtle struggles to pay attention to opening arguments. Gum-chewing, snacking, yawning and alleged napping could be seen throughout the cramped chamber.

Around midnight, things got looser. Senators paced and chatted near the wall. Then the prosecutors and Trump’s defense team got into a back-and-forth over who was lying and making false allegations about Trump’s pressure on Ukraine to help him politically.

Roberts admonished everyone to tone it down. The Senate, he reminded those gathered, is the “world’s greatest deliberative body,” functioning, for now, as a court of impeachment. It has a tradition of civility — and for grave and rare impeachment trials, specific rules: No coffee or snacking on the floor. No pacing, note-passing, working on other matters or chit-chat. Technically, only water is allowed in the Senate chamber, but there have been exceptions in years past for milk and even eggnog.

“There’s coffee, but it’s miserable coffee” in the cloakrooms, according to Sen. Bill Cassidy, R-La. “I mean you would wish it on a Democrat, no one else,” he said, adding, “Just joking.”

It’s all designed to focus the senator-jurors on the issues at hand. So napping is not, in theory, part of the plan.

But for many, Wednesday hurt. Roberts had gaveled Tuesday’s session closed at 1:50 a.m.

Fewer than 12 hours later, the senators were back, with little sleep, for more of the same impeachment story, told by Schiff and his team in exhaustive detail. Even with Roberts’ scolding still fresh, many senators were in no mood for rules or traditions.

Full Coverage: Trump impeachment

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Well into Schiff’s second hour of opening arguments, he moved on from discussing the first of two charges against Trump.

“Now let me turn to the second article,” Schiff said. That prompted several senators to shift in their seats and smile at each other in apparent bemusement. It also sparked a small exodus for the cloakroom, especially on the Republican side, including Sen. Roy Blunt of Missouri and Sen. Tom Cotton of Arkansas.

Within the first hour, Sen. Mark Warner of Virginia could be seen at his desk in the back row, leaning on his right arm with a hand covering his eyes. He stayed that way for around 20 minutes, then shifted to rest his chin in the same hand, eyes closed, for about five more minutes. Despite the late-night votes, Warner’s day had started as scheduled at a 10 a.m. Senate Intelligence Committee hearing.

Crow, a military veteran speaking on the impact of Trump’s holdup of military aid to Ukraine, had trouble holding the Senate’s attention. Some senators left their seats and headed to cloakrooms, stood in the back or openly yawned as he spoke. At one point during his address, more than 10 senators’ seats were empty.

Crow wondered aloud if the Senate wanted to take a recess.

No dice. Senate Majority Leader Mitch McConnell said there would be no break until dinner, more than an hour later.

The water-only practice seemed to be one guideline the senators could get around by tradition.

Cotton, R-Ark., for example, was seen drinking a glass of milk early in the day. Spokeswoman Caroline Tabler said Cotton was drinking skim milk — a nice complement to the chocolate snacks he and other senators were getting in their cloakroom and from one lawmaker’s desk.

Like so much about the fusty Senate, even the beverage exceptions are rooted in history. Cassidy told reporters that milk joined water as the officially permitted drinks in the Senate chamber in the 1950s. Cassidy, a doctor, said that at the time, milk was believed to be a treatment for stomach ulcers.

According to the Senate Historical Office, Sen. Robert LaFollette, R-Wis., drank eggnog during a 1908 filibuster, and Sen. Strom Thurmond of South Carolina, while still a Democrat in 1957, drank orange juice during his record 24-hour filibuster against the Civil Rights Act.

Factoids aside, the novelty of the impeachment trial had clearly worn off Wednesday. Senators had heard the Trump-Ukraine story before, many times. Their boredom, one Republican senator suggested, had become a challenge to the prolific House managers’ strategy. Sen. Mike Rounds of South Dakota said the less wordy president’s legal team had “read the Senate” better.

“It was a long day and the House managers did a lot of repeating the same material,” Rounds told reporters. “I’ve got 20 pages of notes, and towards the end, we were basically hearing the same thing over again. It was a diatribe.”

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Associated Press Writers Alan Fram, Eric Tucker and Matthew Daly contributed to this report.

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