Clark wants to convince credit card companies like MasterCard and Visa to stop doing business with people and companies involved in the sale of ghost guns.
This comes as her borough sees crime surge.
We talk to her about the solution to stopping this gun insanity.
Also ahead, a new study shows only 8% of all office workers in Manhattan have returned full time and that it is hurting New York's economy.
Kathryn Wylde, president and CEO of Partnership for New York City, talks about how to get workers back in the office full time.
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Up Close with Bill Ritter airs Sunday mornings at 11:00 on Channel 7.