The late, great Maya Angelou coined an aphorism which should be rendered in needlepoint and hung on the walls of every American: “When someone shows you who they are believe them; the first time.” Oddly enough, though, some people really don't get this- exhibit A being: "I voted for Donald Trump because I wanted to see change in our country. One change I didn’t want to see was access to health care at Planned Parenthood blocked."
Besides choosing virulently anti-choice Mike Pence as his running mate, Donald Trump came out and said that he'd defund Planned Parenthood during one of the GOP debates:
I'm still wrapping my head around the notion that people would vote for a guy who made clear-cut statements about his policy proposals, believing that he wouldn't follow through with them. Not too long ago, one of Trump's spokescritters exhorted the public not to pay attention to Trump's words, but to 'look into his heart' (funny, all I see is arteriosclerosis)... basically, she was urging people to trust him precisely because he's lying.