As always seems to be the case: it's the coverup that gets ya. In this case it's the secret service.

[Ocelot II]

2. It is not the Secret Service's job to protect Congress.

The Secret Service is tasked with ensuring the safety of the president of the United States, the vice president of the United States, the president-elect of the United States, the vice president-elect of the United States, and their immediate families; former presidents, their spouses and their minor children under the age of 16; major presidential and vice-presidential candidates and their spouses; and visiting foreign heads of state and heads of government. By custom, it also provides protection to the secretary of the treasury and secretary of homeland security, as well as other persons as directed by the president (usually the White House chief of staff and national security advisor, among others).

https://en.wikipedia.org/wiki/United_States_Secret_Service

Protection of Congress is the responsibility of the Capitol Police. However, there could have been texts about whether and how the Secret Service would remove Pence from the Capitol and what to do with him. Did Pence's agents know ahead of time what was going to happen, and did they have instructions from TFG to take him away?