Trump has addressed the annual march remotely before, but Friday marked the first time a sitting president has spoken in person at the anti-abortion rights event.
Three years after winning a big legal battle, abortion providers still find themselves losing the ground war when it comes to keeping clinics open across the huge, populous state.
The hearing on Thursday will use Missouri — where the last remaining clinic that provides abortion could close over a dispute with health regulators — as a case study.
In Virginia and Kentucky, activists on both sides of the abortion debate are working to elect candidates at the state level with the power to affect abortion policy.
The abortion-rights group says the goal of the $45 million campaign is to unseat President Trump as well as elect candidates at all levels who support abortion rights.
Many clinics that provide family planning services still rely on Title X funding. Their doctors worry about what they can say to patients about abortion under new rules.
Planned Parenthood officials asked for a stay against new Trump administration rules that forbid organizations receiving Title X funds to provide or refer patients for abortion.
The rules block recipients of federal grants from referring patients for abortion. The Trump administration says groups working in "good faith" will have until Aug. 19 to provide written assurance.
The move follows an announcement this week by the Trump administration that it will enforce new rules forbidding groups that receive the funds from counseling patients about abortion.