Washington, D.C. ? President-elect Barack Obama will announce the final selections for his Cabinet on Friday, naming Rep. Hilda Solis, D-Calif., as labor secretary and former Dallas mayor Ron Kirk as U.S. trade representative. The two will be in Chicago to be formally announced, along with Rep. Ray LaHood, R-Ill., Obama’s choice for transportation secretary.

With his selection of Solis, a liberal member of Congress, the president-elect appears to be moving toward his goal of promoting “green-collar jobs” — those that help promote more energy efficiency, through projects such as retrofitting, something Solis has prioritized during her tenure in Congress.

Obama will install Kirk as the steward of his trade policies. The first black mayor of Dallas, Kirk ran unsuccessfully for one of Texas’s U.S. Senate seats in 2002. Since leaving office, he has been a partner at the Houston-based law firm of Vinson & Elkins. Among his priorities will be following up on Obama’s campaign promises on trade, including stiffer enforcement of trade agreements, particularly the environmental and labor protections in the North American Free Trade Agreement.