Some states are taking greater action to stop vaping.

In Massachusetts last month all e-cigarettes were banned for four months.

New York, Michigan, Rhode Island, Oregon and Washington have all banned flavored e-cigarettes.

There is a proposed federal bill asking for a cap in the level of nicotine in e-cigarettes.

Illinois Democrat Raja Krishnamoorthi introduced the bill on Monday, he wants the cap to be no more than 20 miligrams per mililiter, hoping to make them less addictive.

It is the same regulations as the European Union and right now there is no cap in the United States.