Richard Koshalek, the director of the Hirshhorn Museum and Sculpture Garden in Washington, D.C., announced his resignation on May 23, 2013 after three years with the institution. Koshalek’s decision was prompted by the Hirshhorn’s board of trustees’ failure to reach a consensus in regards to a plan to cover the museum’s courtyard with a temporary inflatable bubble, which has been continually stalled.

Koshalek made the announcement during a board meeting, which was centered on the bubble project. During the meeting, the 15 board members were unable to agree whether or not to continue fundraising for the project. Officials said that the bubble will remain under consideration even after Koshalek’s departure.

If created, the bubble would connect the inside and outside of the Hirshhorn and create additional space for installations and performances. Designed by Diller Scofidio & Renfro, the bubble is expected to cost over $12.5 million to create and install. Fundraising efforts have brought in about $7.8 million to date.