Legalize Marijuana for multiple reasons.

Legalizing marijuana for recreational or medical use can benefit the United States. It can be used for health uses, jobs (to help the economy), etc.
Medical use of marijuana is much safer than prescription pills or shots. One can have an allergic reaction to a shot and the side affects of pills can be grave. Also, marijuana helps with chronic pain, depression, anxiety, cancer (by getting the cancer patients to eat,) and many more.
For the economy, it can create jobs and you can tax it. The jobs that can be created are growing/harvesting, working in a dispensary, making baked goods from it (if one cannot smoke it due to lung issues) and so many more.
Legalizing this herb will probably make the US a better place.