The Canada pension plan contribution rate increased to 7% from 6.4% in January 1999, which is an annual increase of $1.4 billion taken out of the pockets of Canadian taxpayers, whether they are business owners and their businesses are having to pay their portion or people who are actually on the frontline doing the work.
they found themselves losing more money due in part to a law
According to the statement, more money was taken away from Canadians at the beginning of the year as a result of the law. This makes my statement correct. The model seemed to be confused with common vs proper nouns. It would probably catch me if I used the word Canadians, but the word they would slip under its radar. 
( z1 find :ARG0 ( z2 they ) :ARG1 ( z3 lose :ARG0 z2 :ARG1 ( z4 money :quant ( z5 more ) ) :ARG1-of ( z6 cause :ARG0 ( z7 law ) :degree ( z8 part ) ) ) )