Green’s Dictionary of Slang

1. (US) an unwanted admirer.

1900

Nat. Police Gaz. (NY) 25 Aug. 6/3: He followed the performers from town to town, until he became known to the girls as ‘the excess baggage’.

2. (US Und.) a second-rate confidence man.

1915		B. Sunday in Day Book (Chicago) 5 Apr. 25/2: You bull-necked, beetle-browed, hog-jowled, peanut-brained, weasel-eyed, four-flushers, false alarms and excess baggage!
1940		D. Maurer Big Con 296: excess baggage. A grifter who is incapable of discharging his duties with the mob.