Behold the Dreamers by Imbolo Mbue, 382 pages.
Jende Jonga is able to come to the United States from Limbe, Cameroon, thanks to his cousin Winston. And thanks to Winston, Jende lands a job as a chauffeur for Clark Edwards, a senior exec at Lehman Brothers (pre-2008 crash). Nene, Jende's wife eventually works temporarily for Edwards's wife Cindy, and because of this the Jenga's situation improves but they also have a front-row seat to the unraveling of the Edwards's household.
Mbue does a wonderful job of portraying all of her characters sympathetically.