Outside the Capitol Building on Tuesday sat dozens of cardboard cutouts depicting Mark Zuckerberg, the chief executive of Facebook, wearing a characteristic T-shirt emblazoned with the message "Fix Fakebook".
The Senate hearing was expected to be a confrontation between the good old political powers and the tech-powered billionaire who had just let a company use data from 87 million people without their consent.
According to officials, Mr Hancock sought assurances United Kingdom citizens' data was no longer at risk and that they would be given more control over their data in future - including making it easier to transfer their data to other platforms if they chose.
Of the hundreds of questions thrown at Mr Mark Zuckerberg by USA lawmakers on Tuesday, none appeared to flummox the Facebook founder more than Senator Dick Durbin's pointed query about where he slept the previous evening.
A more poignant line of questioning was led by Rep. David McKinley of West Virginia, who pointed out that Facebook was still carrying ads for illegal online pharmacies that sell opioids such as Vicodin, Percocet and OxyContin without a prescription.
Sixteenth fatality confirmed in Broncos bus collision
Chatham-Kent Employment & Social Services shows its support for the Humboldt Broncos, April 12, 2018. The death toll from Friday's Humboldt Broncos bus crash near Tisdale, Saskatchewan has risen to 16.
"When you go to Facebook's "I don't have a Facebook account page and would like to request all my personal data stored by Facebook", it takes you to a form that says go to your Facebook page and then on your account settings you can download your data".
The 33-year-old CEO said Facebook was in a constant struggle to guard against Russian manipulation of the Facebook platform to influence elections in the USA and elsewhere.
"It's clear now that we didn't do enough to prevent these tools from being used for harm", he said in prepared testimony released before his appearance. He said Facebook had considered the data collection "a closed case" and had not alerted the Federal Trade Commission.
Sen. Lindsey Graham, R-SC, asked Zuckerberg if he would be willing to offer his advice to lawmakers on regulations that might be necessary to his industry.
That didn't really answer the question.
How do you know if you were possibly influenced by Russian propaganda on Facebook? "You are collecting personal information on people who do not even have Facebook accounts".
Cambridge Analytica's acting CEO is stepping down from the role, the company announced on Wednesday, the latest leadership shake-up at the British firm rocked by a data breach scandal that has drawn the ire of regulators in the US and overseas. Zuckerberg demurred, saying, "This is a complex issue that I think deserves more than a one-word answer".
"We didn't allow the Obama campaign to do anything that any developer on the platform wouldn't have otherwise been able to do", Zuckerberg said.