New York Police Department Commissioner Bill Bratton holds an example of what 25 grams of marijuana would look like next to New York City Mayor Bill de Blasio during a news conference regarding marijuana policy in New York November 10, 2014. Under the policy change, people caught with less than 25 grams of marijuana on them "may be eligible" to receive a summon in lieu of being arrested. The bag shown in the news conference actually contained oregano. REUTERS/Shannon Stapleton (UNITED STATES - Tags: CRIME LAW DRUGS SOCIETY TPX IMAGES OF THE DAY) 

New York Police Department Commissioner Bill Bratton holds an example of what 25 grams of marijuana would look like next to New York City Mayor Bill de Blasio during a news conference regarding marijuana policy in New York November 10, 2014. Under the policy change, people caught with less than 25 grams of marijuana on them "may be eligible" to receive a summon in lieu of being arrested. The bag shown in the news conference actually contained oregano.
REUTERS/Shannon Stapleton (UNITED STATES - Tags: CRIME LAW DRUGS SOCIETY) 

New York Police Department Commissioner Bill Bratton (C) holds an example of what 25 grams of marijuana would look like next to New York City Mayor Bill de Blasio during a news conference regarding marijuana policy in New York November 10, 2014. Under the policy change, people caught with less than 25 grams of marijuana on them "may be eligible" to receive a summons in lieu of being arrested. The bag shown in the news conference actually contained oregano.
REUTERS/Shannon Stapleton (UNITED STATES - Tags: CRIME LAW DRUGS SOCIETY) 

New York Police Department Commissioner Bill Bratton (C) holds an example of what 25 grams of marijuana would look like next to New York City Mayor Bill de Blasio during a news conference regarding marijuana policy in New York November 10, 2014. Under the policy change, people caught with less than 25 grams of marijuana on them "may be eligible" to receive a summons in lieu of being arrested. The bag shown in the news conference actually contained oregano.
REUTERS/Shannon Stapleton (UNITED STATES - Tags: CRIME LAW DRUGS SOCIETY) 

Dinah Veeris smashes an oregano plant to extract juice in her garden Den Paradera in Willemstad on Curacao Island June 18, 2008. For years Dinah Veeris ignored the traditional Caribbean medicine of her native Curacao, but since 1994 Veeris opened a garden outside the capital of Willemstad to preserve herbal medicine and local traditions. REUTERS/Jorge Silva (NETHERLANDS ANTILLES)