Editors note: Republicans failure to repeal Obamacare after assuming control of the White House as well as Congress registered strongly with our audience in recent days. The day after President Trumps 100th day in office, todays mailbag leads off with two related letters, one signed by 17 GOP and grassroots activists in Pennsylvania.Ken McIntyre Dear Daily Signal: Since it was enacted into law in 2010, most Americans have opposed the Affordable Care Act, aka Obamacare.