He went on to say that the law, effective July 1, will make schools healthier and save lives.
>> Read the tweets here
The law eliminates "penalties for underage possession" but imposes fines against businesses caught selling tobacco to anyone under 21, the AP reported.
Other states have passed similar laws, including Washington, Oregon, California, Massachusetts, Virginia, Arkansas, New Jersey, Hawaii, Utah and Maine, WREX-TV reported.
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– The Associated Press contributed to this report.