Three lawsuits claiming President Trump's business dealings are violating the Constitution have ping-ponged in federal courts for months. But all three cases are now advancing to critical stages

Three lawsuits claiming President Trump's business dealings are violating the Constitution have ping-ponged in federal courts for months.

But all three cases are now advancing to critical stages. https://t.co/J4nTez0ziM

— NPR Politics (@nprpolitics) December 12, 2019