In the meantime, this does not prevent the political arms, ours in the Senate, and the House of Commons, from taking their full responsibility and giving their opinions in their respective spheres of influence, by virtue of the principle of the separation of the three powers, which is also at the heart of our constitutional system.
The political arms in the Senate and the House of Commons have different opinions and spheres of influence.
This one's hard to even make a sentence out of. Anyway, the Senate and the House of Commons probably have the same sphere of influence, but who knows what their opinions are. The system probably struggled with this one for the same reason a human would, it's just difficult to understand without a lot more context. 
( z1 have :ARG0 ( z2 and :op ( z3 arm :mod ( z4 politics ) :part-of ( z5 government-organization :name ( z6 name :op "Senate" ) ) ) :op ( z7 arm :mod z4 :part-of ( z8 government-organization :name ( z9 name :op "House" :op "of" :op "Commons" ) ) ) ) :ARG1 ( z10 and :op ( z11 thing :ARG1-of ( z12 opine ) ) :op ( z13 sphere :mod ( z14 influence ) ) :ARG1-of ( z15 differ ) ) )