Students will have a midterm soon. There will be some questions on the very likely shutdown (using the ISLM) and the minimum wage. The figure below shows the real (deflated with CPI) and nominal minimum wage for the US since 1939.
No surprises in the story. Minimum wage in real terms peaked in 1969, a culmination of an expansion that started in the 1950s. It fell significantly starting in 1979, with the Volcker shock and the fixed nominal minimum wage during the Reagan years, and never recovered the Golden Age peak. Since the 1970s, Dems managed to increase the rate in nominal terms (Carter, Clinton and Obama), but not reverse its decline in real terms. So far Congress has managed to stop the Biden administration attempts at raising the rate. And even when procurement contracts should give the executive some power over minimum pay, conservative judges have acted to stop it.