Kissing can definitely be weird in the US but it kinda depends: Kissing a kid on the forehead? Ok. Kissing a kid on the lips? Weird.

On a related note: Don't kiss babies at all because, regardless of the culture they live in, their immune systems are still developing - don't let anyone kiss your baby even if they claim they're healthy (imagine having lifelong herpes because your parent let some dipshit kiss you when you were a baby). Don't give an infant honey either.