Donald Trump has been in office barely a month, and already Capitol Hill Democrats and liberal commentators are plotting his removal from office. A typical headline asked: “How Can We Get Rid of Trump?”

You can’t. Mr. Trump was fairly elected to a four-year term, which he will serve unless legitimate grounds emerge for impeachment. It’s time to move from 24-hour rage to serious consideration of the president’s policy proposals and, where appropriate, offering alternatives.

Critics could begin by recognizing that Mr. Trump’s agenda is not unlike the one John F. Kennedy put forth in 1960. JFK proposed tax cuts “to get America moving again” and a defense buildup to blunt Soviet and Chinese territorial ambitions.

Democrats could then offer constructive ideas of their own for dealing with the nation’s problems. Had Hillary Clinton been elected, she would be busy today trying to fix the cost and coverage problems of ObamaCare, as Mr. Trump and the Republicans are. Before the new administration has even introduced its proposal, Democrats are pretending that ObamaCare repeal would be followed by nothing and that Mr. Trump is trying to “make America sick again.”

Likewise on immigration, any country must control its borders. Mr. Trump has taken a pragmatic position that illegal aliens who commit crimes should be deported but suggested that so-called Dreamers, who were children when their parents brought them here illegally, should be treated more generously. He also proposes a short-term hold on immigration from seven countries where terrorists are active, during which new rules may be established for immigration from those countries. Rather than denouncing Mr. Trump as anti-Latino, anti-Muslim or xenophobic, let us await his administration’s longer-term proposals and engage with them in a serious way.