Former President Barack Obama’s presidential library is hocking pricey merch shaped like the unsightly Chicago tower — as the project’s architects revealed the former commander-in-chief himself was behind the “Death Star” design that’s been widely mocked since construction began.

The dedication ceremony for the Obama presidential library will be held in June, former President Obama announced on Saturday. Obama thanked residents in the south side of Chicago, the project’s building site, for their support throughout the lengthy ...