Police officers look on as President Donald Trump speaks in New York in July. Credit: Photo by Spencer Platt/Getty Images

Welcome to the Reader‘s morning briefing for Monday, July 31, 2017.

  • Rahm: Trump has never revealed the name of mystery cop who can solve Chicago’s gun violence issues in “a couple of days”

President Donald Trump has never given Mayor Rahm Emanuel the name of the “rough cookie” cop who Trump says gave him his business card and bragged that if given the authority, he could solve the city’s gun violence problems in “a couple of days,” according to Emanuel spokesman Adam Collins. Trump repeated the story Friday to a group of cops in Long Island, claiming to have had the encounter while campaigning in the city in 2016. “I said, ‘You’ve gotta be kidding. . . . Give me your card.’ And he gave me a card,” the president said in the speech. “And I sent it to the mayor. I said, ‘You ought to try using this guy.’ Guess what happened? Never heard. And last week they had another record. It’s horrible.” No such card ever arrived, Collins says, and the Chicago Police Department was “unable to identify any department member who had a conversation with then-candidate Trump,” according to CPD spokesman Frank Giancamilli. [Tribune]

  • After judge’s final ruling, Cook County soda tax will go into effect Wednesday

Cook County judge Daniel Kubasiak lifted his ban on the sweetened beverage tax, allowing the penny-per-ounce surcharge to go into effect Wednesday in Cook County. The delay cost the county $17 million in lost revenue, according to Cook County Board president Toni Preckwinkle. “We believed all along that our ordinance was carefully drafted and met pertinent constitutional tests,” she said in a statement. [DNAinfo Chicago   ]

  • Mexican drug cartels take advantage of Chicago’s street violence, gangs

The drug trade is one of the factors fueling the increasing gun violence in Chicago, according to the Daily Beast. The city is a “logistical hub” for narcotics traffic, according Chicago-based DEA agent Mark Giuffre, and the city’s gangs “are scrambling to be the ones to distribute it,” shipping it on north to Milwaukee or to parts west. “Most of what comes here doesn’t stay here,” Giuffre says. The DEA estimates that there are about 100,000 active members of criminal groups in Chicago, which it calls “the street gang capital of America.” [Daily Beast]

  • How Chance the Rapper, Chief Keef represent two different sides of the city’s black communities

Chance the Rapper and Chief Keef have both risen to national fame for their rap talent while exemplifying “the dueling personalities within black communities on the South and West sides fighting for the souls of men and boys,” according to the Tribune‘s William Lee. “Learning to understand Chief Keef’s Chicago and key sources of desperation within it could give social service agencies, city officials and community leaders clues as how to best neutralize the hopelessness that leads to crime,” Lee writes. “It also wouldn’t hurt them to study Chance’s Chicago and its dwindling resources if they hope to retain capable homegrown talent before it flees Illinois.” [Tribune]

  • Cook County Jail supplies inmates with overdose-reversing drug before they leave

Cook County Jail has given out about 400 naloxone nasal spray devices, which reverse overdoses from opiate, to inmates before they leave the jail. Since last summer, the jail has trained about 900 inmates to use the device. Drug users are most likely to overdose in the first two weeks after being released from jail. “We’ve got to keep them alive, (and) if we can get them through that two-week window, they might get treatment, get off drugs,” Cook County sheriff Tom Dart said. [Associated Press via ABC News]

  • Parson’s Chicken & Fish wants to open a Lincoln Park location

Parson’s Chicken & Fish is hoping to open a second outpost in Lincoln Park. The Logan Square favorite is interested in moving into the former home of Lemay Auto Parts at 2435-39 N. Halsted, DNAinfo reports. [DNAinfo Chicago]