Of course. The secret service does not decide who has access to the President or keep away people that he wants to see.
In regards to the President's security detail, essentially yes. Where ever the President goes he is accompanied by a certain number of secret service agents.
The sole purpose of the Secret Service agents are to protect the president. Whoever protects them is irrelevant and quite frankly not needed. People don't plan assassination to kill Secret Service agents, because of how quick people can act. With only 1 (maybe 2) shot, you need to kill the most important figure there, which is usually the president.
In the President's Secret Service has 288 pages.
The secret service.
The secret service which is a branch of the treasury department guards the president.
In the President's Secret Service was created on 2009-08-04.
Secret service
President Barack Obama's secret service codename is Renegade.
They are secret service agents there to protect the president
The Secret Service
President Clinton is the last president to have lifetime protection from the secret service. Every president after him will only have secret service protection to 10 years. In 2013, President Obama signed legislation restoring Lifetime Secret Service protection to former Presidents.
The Secret Service code name for Frank Sinatra was Napoleon.