1. Why does it have to be a past tense? Which event occurred first?
The conference has been involved in controversy for over a year before the first president arrived.
2. Can the underlined part (looks to me like a prepositional phrase) act as a noun or a complement (I don't which it is). Should it be 'ways' and not 'way' in the phrase 'The number one way'?
The number one way I like to spend my time is with my family and work.