Pro tip: if your senator's/congressperson's DC office doesn't answer or their mailbox is full, call their regional offices.

Most senators have six regional offices. Just google your senator and you'll find it on their website.

Keep calling until you get a person or can leave a message.

I went to my Congressman's local office today. First off, they were surprised that I was there. They said they had been getting phone calls, but I was the first walk-in. That said, the phones were not ringing off the hook. If the DC phone lines are busy, try calling the local office.