How many times did Robert Creamer visit Obama's White House?
The context of the question are two facts related to 2016 US Presidential election:
That there is an ongoing scandal over Robert Creamer's actions as part of Hillary Clinton's Presidential campaign (detailed at CNN article here, in short, there are videos which are interpreted as planning to disrupt Trump rallies and plant protestors).
There is a separate ongoing scandal over allegations of voter fraud. From Wikipedia:
In October 2016, conservative activist James O'Keefe's Project Veritas Action released hidden-camera videos appearing to show Creamer and others who worked for firms hired by the Hillary Clinton campaign engaging in hypothetical conversations about voter registration. One clip in the video shows Creamer meeting with an undercover activist posing as a potential donor. After the actor suggests finding a way around voter registration laws, Creamer responds "my fear is that someone would decide that this is a big voter fraud scheme."