To answer your question, the ALS association raises public awareness about ALS, provides care services to ALS patients and distributes funding to research projects on ALS. The politics to when one of these research facilities discover a cure for ALS is up to them. They are just receiving grants from the ALS Association.
ALSA got most of the support from the ice bucket challenge, and their focus will be more on research as a national charity, but local ALS chapters do a ton for a rapidly changing and expensive disease.
They have nice little pamphlets that talk about "Give the gift of honor". I find it rather despicable how they use the emotions of relatives of those who have passed on to pad their bottom line.
I have a family member with ALS and can confirm that they have done a ton to support with various equipment needs and finding the right equipment for them. Support caregivers are only partially paid for (though I can't remember whether that is through the charity or the province).