[Jim Noble]

Where in the Constitution can I find this “requirement to investigate”?

[philman_36]

The irony...

Where in the Constitution can I find this “requirement to investigate”?

Senators File Ethics Committee Complaint Regarding Colleagues’ Role in Jan. 6 Insurrection
When Senators Ted Cruz and Josh Hawley announced they would object to the counting of state-certified electors on January 6, 2021, they amplified claims of election fraud that had resulted in threats of violence against state and local officials around the country.

The question the Senate must answer is not whether Senators Hawley and Cruz had the right to the object to the electors, but whether the senators failed to “[p]ut loyalty to the highest moral principles and to country above loyalty to persons, party, or Government department”[4] or engaged in “improper conduct reflecting on the Senate”[5] in connection with the violence on January 6. The Senate Ethics Committee should investigate their conduct to fully understand their role. The actions of which we know demand an investigation and a determination whether disciplinary action is warranted. Until then, a cloud of uncertainty will hang over them and over this body.

It may not answer your question, but damn, it'll make ya think.

[philman_36]

Where in the Constitution can I find this “requirement to investigate”?

Here ya go, Jim. Congressional Record WASHINGTON, WEDNESDAY, JANUARY 6, 2021

Just use the Find/Search function with "investigat"...just that, no "e", no "i"...and see just how many times that comes up.

For more irony, find/search "oath" and then scroll up to the previous page, the right hand column for who was speaking.

[Mr. K]

right next to the part that says the VP certifies the results.