Not exactly what you are looking for, but Open Secrets gets you almost there: https://www.opensecrets.org/federal-lobbying https://www.opensecrets.org/federal-l

Not exactly what you are looking for, but Open Secrets gets you almost there: https://www.opensecrets.org/federal-lobbying https://www.opensecrets.org/federal-lobbying Their API leaves a lot to be desired, but the data is much easier to access and analyze than the raw data from the US House or Senate websites.