With Trump's impeachment trial no longer dominating the headlines, Biden is making his first official trip as president Tuesday to visit Milwaukee, Wisconsin, as he tries to drum up popular support for his $1.9 trillion COVID-19 relief package.

Biden is taking his case directly to the American people at a CNN town hall in Milwaukee at 9 p.m. ET ahead of another Midwestern trip -- to Michigan on Thursday -- to visit a Pfizer manufacturing site.

The White House has maintained that while GOP senators in Washington are balking at his costly plan, a large majority of Americans support it, as well as several Republican governors and mayors.

Biden's first trip official trip outside Washington as president -- amid an ongoing pandemic and still struggling economy -- also provides him the chance to show the one-on-one empathy with Americans he's made his trademark.

A U.S. service member and several American contractors were injured in a rocket attack near Iraq's Erbil International Airport on Monday, according to a statement from Secretary of State Antony Blinken.

One non-American, civilian contractor was killed, according to initial reports of the attack.

A statement from the Ministry of the Interior of the Kurdistan Regional Government said a number of rockets were launched toward the city of Erbil and landed on several sites at 9:30 p.m. local time. Three missiles fell near Erbil International Airport, a source at Iraq's Ministry of Interior confirmed to ABC News.

"We are outraged by today’s rocket attack in the Iraqi Kurdistan Region," Blinken said in his statement.

"We express our condolences to the loved ones of the civilian contractor killed in this attack, and to the innocent Iraqi people and their families who are suffering these ruthless acts of violence," the statement continued.

Blinken's statement did not say who was behind the attack or throw blame on Iran, but a Shite militia group has claimed responsibility, according to SITE Intel.

The U.S. secretary of state also confirmed he called the prime minister of Iraq's Kurdistan Regional Government, Masrour Barzani, to pledge U.S. support.

-ABC News' Conor Finnegan, Cindy Smith and Christine Theodorou

Former President Donald Trump on Monday made his first public appearance since his Senate acquittal over the weekend, greeting supporters from his motorcade as he passed them by in West Palm Beach, Florida.

It was one of just a few public sightings of Trump off the golf course since he left the White House and relocated to his new home state on Jan. 20.

Meanwhile, the seven Republican senators who joined Democrats to vote to convict the former president are facing backlash from their home states.

Sen. Bill Cassidy was unanimously censured by the Louisiana GOP executive committee just hours after he voted on Saturday and Sen. Richard Burr was censured by the North Carolina Republican Party Central Committee in an unanimous vote on Monday.

ABC News' Will Steakin, Meg Cunningham and Quinn Scanlan

The United States Capitol Police Union voted no confidence in the acting chief and senior USCP leadership.

"The past week of the impeachment trial showed members of Congress and the entire country, devastating details of the violence that Capitol Police officers faced during the insurrection," union Chairman Gus Papathanasiou said. "It was the darkest day in the history of the department."

The union said the step was "unprecedented" and that 92% of their members voted no confidence in acting Chief Yogananda Pittman.

The chairman added that there are leaders inside the department that they trust and would rather see in the top positions.

"We hope congressional leaders and the entire Capitol Hill community understands that continuing with the current USCP leadership is not an option," Papathanasiou continued. "The current leadership is just a continuation of the past regimes on this department and there needs to be accountability. Their failures are inexcusable."

-ABC News' Luke Barr