Poor legal writing infiltrates all levels of written expression, from punctuation, to sentence structure, to elements of design. Even after you remove the archaic legal terms, you can still tell that the sentence was probably written by a lawyer or government official. This is because of the embedded clauses.
Embedded clauses are clauses inside other clauses.
The main clause contains the primary message the writer wants to communicate. The writer should always try to keep it clear and concise. Lawyers use embedded clauses in an attempt to include as much information as possible in the one clause. This comes from the writer's failure to work out and emphasise the main message. It is also a hangover from the days when each clause of a legal document had to consist of only one sentence.