What is a compound sentence with the word security?

Openness aspires to let any American citizen walk up to the President and shake his hand; security demands that this not be allowed.

A sentence which consists of clauses linked by coordination is called a compound or complex sentence.

Openness aspires to let any American citizen walk up to the President and shake his hand but security demands that this not be allowed.

I wanted to go into the night club but the security guard said I wasn't dressed appropriately.

The museum has a new security system and now we have to use a swipe card.