In Washington, relationships come and go. In a quick succession of phone calls on Tuesday, Joe Biden exited negotiations with Sen. Shelley Moore Capito (R-W.Va.) and started them with Sen. Bill Cassidy (R-La.). Could a compromise on infrastructure be on the way? 

Raghu Manavalan is the host of POLITICO's Playbook.
Jenny Ament is the senior producer for POLITICO Audio. 
Irene Noguchi is the executive producer of POLITICO Audio.