The use of the word "urge", instead of "request" or "demand", seems to imply that Google is within its rights to decide. The letter does not threaten any legal action if Google decides not to remove alleged misinformation. It does not allege that Google has broken any law. What the letter does request are answers to questions. It looks like a standard letter requesting information that we commonly see from US Senators to US tech companies.
The use of the word "urge", instead of "request" or "demand", seems to imply that Google is within its rights to decide. The letter does not threaten any legal action if Google decides not to remove alleged misinformation. It does not allege that Google has broken any law. What the letter does request are answers to questions. It looks like a standard letter requesting information that we commonly see from US Senators to US tech companies.