Will This Make Me Itch???
It appears to be tree of heaven, Ailanthus altissima. You should wear gloves when handling tree of heaven although most people will not have a reaction to it. You can confirm that it is tree of heaven and not sumac by crushing a leaf to smell it. Sumacs have a pleasant, citrusy scent and tree of heaven leaves smell like burnt peanut butter. Most sumacs are not poisonous. You can read more about controlling tree of heaven here, https://extension.psu.edu/tree-of-heaven.