Biden faces increasing pressure to stop the freight rail

Rail companies and unions have been under pressure

to negotiate a deal from White House officials and Biden himself.

Prior to a deadline on Friday

 time is running out to avoid a potential freight train shutdown.

The vocal union backer Biden is in a precarious political position.

In an effort to prevent a shutdown,

 top advisers and Biden himself spoke with train firms

and union representatives late

on Monday night and Tuesday.