Obama didn't cause this (I hate Obama, but I don't place blame where it doesn't belong). However, he did nothing to curb these calls either; just like everyone. Perhaps Trump will do something about it. He's a bit different then all the other politicians.
This has nothing to do with the Obama administration. In fact, in May 2014, Sprint was fined a record $7.5 million for failing to honor requests by consumers to opt out of receiving telemarketing calls and texts. The fine followed an investigation that had begun in 2012.
Got the warranty scam call today. Told them my newest car is a 1999, oldest is a 1990. I asked if they really thought I had any warranty after 2002. They hung up.