In most USA English, both the vowel part ("long" vs "short" in our goofy classification system) and the r/l part are different. Most of these accents have a rh

In most USA English, both the vowel part ("long" vs "short" in our goofy classification system) and the r/l part are different. Most of these accents have a rhotic r but not a rhotic (lotic?) l in this position.