Re: "...start writing letters and calling their offices to let them know you oppose that legislation NOW...."
I can't think of a better waste of your time and resources.
You have no representatives.
None.
Haven't had any for quite some time now.
There is not one individual sitting in the American Government who so much as thinks of you as anything but some filthy garbage necessary for them to tolerate and dupe, in order for them to maintain their aristocratic power and wealth.
America no longer exists.
It ended with the military-industrial coup which assassinated JFK, and then proceeded to strip away the Constitution clause by clause.
Don't believe me?
Read the entire Constitution, and then see for yourself that America's government has no relationship whatsoever to the government mandated by the Constitution and Bill of Rights.
The people whom you would rely on to look out for you, long ago accepted millions and millions of dollars from the Chinese, Arabs, and Narco-Terrorists to do only their bidding.
There is a North American Entity here; but no America.
Now what are you gonna' do?