G.O.P. and Secret Service Clash Again Over Convention Protest Zone

The Republican National Committee, alarmed by what it sees as a significantly worsening security threat, asked on Thursday that the director of the Secret Service personally intervene and grant a request to move a designated protest zone farther away from convention participants in Milwaukee this summer.

Republicans have demanded for nearly a month that the Secret Service push back the protesters from the convention site. Now, seven weeks before the start of the convention on July 15, a letter from Todd R. Steggerda, a counsel to the R.N.C., has raised the stakes.

“Your failure to act now to prevent these unnecessary and certain risks will imperil tens of thousands of convention attendees, inexcusably forcing them into close proximity to the currently planned First Amendment Zone,” Mr. Steggerda wrote to Kimberly A. Cheatle, the director of the Secret Service, referring to a designated protest site at Pere Marquette Park, a small public park on the bank of the Milwaukee River, about a quarter-mile from the arena hosting the convention.

In his letter, a copy of which was obtained by The New York Times, Mr. Steggerda cited “an increased and untenable risk of violence” from a “rapidly deteriorating security environment,” and demanded that Ms. Cheatle intervene. The Secret Service is tasked with leading security for both major-party conventions this summer.

The Republican Party has previously argued that, in the current plan, those attending the convention will be forced to pass by the protesters on their way into the venue, increasing the opportunity for confrontation.

The Secret Service responded in a lengthy statement to Mr. Steggerda’s letter, saying that officials had held “multiple meetings” with the R.N.C. chairman,