The conventional wisdom is that presidential candidate Mitt Romney is slowly but surely becoming the go-to choice of the Republican Party, which had been taking a wait-and-see approach to the primary contest.

Mitt Romney was endorsed for the GOP presidential nomination Wednesday by Rep. Lamar Smith of Texas. (Elaine Thompson/AP)

On Wednesday, Romney notched another endorsement to keep up the trend — one that might also help him make some gains on immigration policy.

Rep. Lamar Smith (yes, the one from Texas) endorsed the former Massachusett’s governor, calling him “a leader who focuses on the interests of American workers and taxpayers more tha

n on expanding the power of the federal government,” according to the San Antonio Express-News.

Congressional endorsements usually don’t carry much weight, but the fact that Smith is from Texas Gov. Rick Perry’s home state and is the chairman of the House Judiciary Committee, which oversees immigration policy, adds insult to injury.

In his campaign, Perry has been framing his approach to immigration to voters in South Carolina and Iowa like this: Would you rather the guy from Texas handle immigration policy or the guy from Massachusetts? Smith’s message on Wednesday provides at least one answer.

(h/t Washington Post staff writer Karen Tumulty)