Rep. Jim McGovern (D-Mass.) and Sens. Mark WarnerMark Robert WarnerSenate panel moves forward with bill to roll back Dodd-Frank Comey back in the spotlight after Flynn makes a deal Warner: Every week another shoe drops in Russia investigation MORE (D-Va.) and Jeff MerkleyJeffrey (Jeff) Alan MerkleyAvalanche of Democratic senators say Franken should resign Senate nixes provision boosting conservative college after uproar Overnight Energy: Panel advances controversial Trump nominee | Ex-coal boss Blankenship to run for Senate | Dem commissioner joins energy regulator MORE (D-Ore.) snapped pictures. Rep. Billy Long (R-Mo.) had "no time to get a picture" but tweeted the view was "very cool."

Rep. Tom Latham (R-Iowa) called it an "amazing sight." Rep. Martha RobyMartha Dubina RobyBrooks’s prior attacks on Trump could hurt in Alabama Senate race How the GOP came to dominate, and be dominated by, rural voters House GOP not sold on Ryan’s tax reform plan MORE (R-Ala.) called it "amazing" that the Discovery traveled 149 million miles in space to make it to Washington.

Sen. John McCainJohn Sidney McCainGOP strategist donates to Alabama Democrat Meghan McCain knocks Bannon: 'Who the hell are you' to criticize Romney? Dems demand Tillerson end State hiring freeze, consult with Congress MORE (R-Ariz.) and his wife Cindy made it a family affair, camping out on the steps of the Capitol along with McCain's 100-year-old mother Roberta McCain, waiting for a sighting.

"I am so excited!" Cindy McCain tweeted.

And Sen. Barbara MikulskiBarbara MikulskiClinton: White House slow-walking Russia sanctions Top Lobbyists 2017: Hired Guns Gore wishes Mikulski a happy birthday at 'Inconvenient Sequel' premiere MORE (D-Md.) took the opportunity to tweet a eulogy to Discovery and to America's ongoing "mission in space."

The retired space shuttle will ultimately be housed at the Smithsonian’s Steven F. Udvar-Hazy Center, an annex of the Smithsonian National Air and Space Museum in Virginia.