Comment: Good idea,

(See in situ)

Good idea,

but let me suggest calling both.
One call or one letter to your congressperson won't do much. If several thousand people contact them, they'll sit up and take notice.
I just keep writing & calling, hoping everybody will join me. It doesn't have to be sophisticated or lengthy, as long as they know your position.
You should contact them multiple times per subject. I try to stuff their inbox single-handedly. The same letter is good.
I get email action alerts from many groups where they have a pre-written letter, auto fill fills in my info and I just hit send. Real easy.