McCaskill has been a stalwart for transparency on the committee. Republicans Kelly Ayotte of New Hampshire, John McCain of Arizona and David Vitter of Louisiana have joined the opposition, but all three voted to conduct the markup proceedings behind closed doors in 2013.
The strongest support for transparency from lawmakers came in 2010 and 2011. In each of those years, nine senators voted to keep the doors to the full committee markup open, but they were still a minority.
Levin does not intend to respond to the Standing Committee’s most recent letter, according to spokeswoman Tara Andringa.
United We Dream protesters carry a mock coffin to the office of Sen. Ted Cruz, R-Texas, in the Dirksen Senate Office Building on Monday, July 21, 2014, to hold one of their "funeral services for the Republican Party" due to GOP positions on immigration. The immigration reform group visited several other Senate Republican offices to hold similar funeral services.