For you posts quoting errors, I have these comments.
The code you wrote in the quote above is not valid. Did you mean
pres.counts<-data.frame(vetos,president)
preTrump<-subset(pres.counts,n > 100)
All the other errors that are of the form "could not find function X", it looks like you have not loaded the ggplot2 and dplyr packages. You must run the library() function each time you restart R.
library(ggplot2)
library(dplyr)
In your next post, the output listed after you run read_csv() does not look like an error. It is just information.
What exactly is the code you are running when you try to plot? Please post it between two lines that consist of only three back ticks.
```
Your code here
```