The Congressmen observed that consumers should have the option of opting out of data collection when "they are not comfortable with a company's terms of service and that the ability to exercise that choice should be simple and straightforward".
Google, meanwhile, has already stated its determination to make privacy across its products easier and clearer when introducing its new policy.
It had been feared that Google would simply use the data to target advertising and search results to users. Indeed, the Congressmen expressed fears that some Google products and services are more hidden, meaning that Internet users might be unconscious as to what data was being linked to them.
One of the signatories to the letter, Congressman Ed Markey, expressed particularly strong fears over how the new policy would impact on young people, pointing out that search through Google is like breathing for "millions of kids and teens".
However, he praised the new policy, saying that it should enable consumers to opt-out if they don't want their use of YouTube to "morph into YouTrack".
Google, for its part, pointed out that it is not necessary to log in to use a lot of its products, including its search engine. And when users are logged in, Google said that they can, if they so choose, take advantage of the privacy control options.