Aside of Silas there is the matter of kamma which includes always the mind.
What's the impact of acting "political correct" or "according to laws", Sila, while having unskilful intentions?
Whould breaking Silas be possible when mind is skilful adjusted?
May skilful acting look like unskilful?
What's the impact of your surpressing a honest answer, well considered, here, while possible having unskilful thoughts an reasons to act so? Or simply guided by not knowing, ignorance?
Of cause it could be that one is limited by circumstances or "forced" to "lie" to fulfill contracts, but what should then be actually given up, left behind?
(It's of less support to answer in manners of ultimate, because even not possible, and does not help in getting started with basics and home tasks, but are purely speculations of defilements: excuses to act proper and to investigate one mind and intentions honest.)