There's been too much finger pointing and too much name calling in Washington, D.C. I would like to unite this country to get an agenda done that will speak to the hopes and aspirations of the future. I want to have an education system that sets high standards, local control of schools and strong accountability.
The country will not be united if the country is not united in setting high standards in the educational system because the educational system is the only thing that can unite the country.  
In the context above, the country must unite to be able to set an agenda that will include high educational standards.  The context presupposes that the educational standards are not good enough, therefore the country must unite to increase the standards as a cause to effect the increased educational standards.  Therefore increased educational standards cannot be the only means by which to unite the country because the country must be united first to increase the educational standards.  
( z1 unite :polarity - :ARG1 ( z2 country ) :condition ( z3 unite :polarity - :ARG1 z2 :ARG2 ( z4 set :ARG0 z2 :ARG1 ( z5 standard :ARG1-of ( z6 high ) ) :location ( z7 system :mod ( z8 educate ) ) ) ) :ARG1-of ( z9 cause :ARG0 ( z10 possible :ARG1 ( z11 unite :ARG0 z7 :ARG1 z2 :ARG2 ( z12 thing :mod ( z13 only ) :domain z7 ) ) ) ) )