Vaughn has put it better than I ever could:
According to the draft document's cover e-mail from Ann Yom Steel, a
political appointee whose mission seems to be to harass and discourage local
agencies who want to help ICE and who want ICE to help them, the agency is
responding to the "many concerns [of immigration law enforcement critics]
related to immigration detainers, including that they could distort the state
criminal process or open the window for pretextual, minor criminal charges." In
other words, ICE believes the ethnic advocacy groups who accuse local cops and
sheriffs of abusing their authority by trumping up traffic charges on innocent
illegal aliens in order to have them deported. Therefore, all illegal aliens who
violate traffic laws will get a free pass from ICE, unless they also happen to
have committed other "real" crimes. The policy draft says: "Immigration officers
shall not issue a detainer unless an LEA [law enforcement agency] has exercised
its independent authority to arrest the alien. Immigration officers shall not
issue detainers for aliens who have been temporarily detained by the LEA (i.e.
roadside or Terry stops) but not arrested," although the LEA may hold them
without a detainer if ICE is coming right away (don't hold your
Interestingly enough, the hand of Harold Hurtt, the former Houston Chief Of Police and opponent of local enforcement of immigration law, who, by the way, is part of the cadre of itinerant black police chiefs who jump from chief's job to chief's job, following failure after failure, as part of the affirmative action practiced by most large cities, is quite obvious.
The memorandum quite stupidly refers to traffic related misdemeanors. Obviously someone unfamiliar with law enforcement wrote this policy draft. Very few traffic offenses are misdemeanors, almost all are infractions. So this policy document if followed will result in nothing happening, as it does not prohibit arrests and detentions of immigration law based on infractions. Stupid is as stupid does.